$\"\"$

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The fourth term in geometric sequence is $\"\"$ .

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The common ratio is $\"\"$ .

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Formula for $\"\"$ term in geometric sequence is $\"\"$ .

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Find the first term of the geometric sequence $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$ .

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Substitute $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The first term of the sequence is $\"\"$ .

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$\"\"$

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Find the seventh term $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ .