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Question
Find the mean proportion of: 8.1 and 2.5
Solution
Let the x be the mean proportion of 8.1 and 2.5
∴ 8.1 : x : : x : 2.5
∴ x2 = 8.1 x 2.5
∴ x = `sqrt(8.1 xx 2.5)`
= `sqrt(20.25)`
= 4.5.
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