Solve for the common ratio using the two terms given: a(8) = ar⁷ a(6) = ar⁵ ar⁷ / ar⁵ = 216 / 12 r² = 18 r = √18 Find the seventh term by plugging it into the formula a(7) = ra(6) a(7) = √18 × 12 a(7) = 3√2 × 12 a(7) = 36√2

= 50.91

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