Algebra-1

Question Analysis
The question requires students to find the common ratio of a geometric sequence given the first term and the 4th term. Students need to use the explicit formula and solve for .

Key Concept Explanation
The explicit formula for the nth term of a geometric sequence is (). By substituting the known values, students can solve for the unknown variable .

Step-by-step Solution
1. Identify the given values: , , and .
2. Substitute these values into the explicit formula:

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