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    Question

    Calculate the third proportional of 25 and

    40.
    A 36 Correct Answer Incorrect Answer
    B 64 Correct Answer Incorrect Answer
    C 55 Correct Answer Incorrect Answer
    D 80 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Third proportion of 'a' and 'b' = (b² / a)

    So, third proportion = (40² / 25) = (1600 / 25) = 64

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