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Question
If x, 12 and 16 are in continued proportion! find x.
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Solution
Since x, 12 and 16 are in continued proportion
⇒ x : 12 : : 12 : 16
⇒ 16 x = 12 x 12
⇒ 16 x = 144
⇒ x = 9
x = 9
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