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    Question

    What is the fourth proportional to 816, 226,

    408?
    A 108 Correct Answer Incorrect Answer
    B 103 Correct Answer Incorrect Answer
    C 113 Correct Answer Incorrect Answer
    D 117 Correct Answer Incorrect Answer

    Solution

    Let the fourth proportion be x. 816: 226: 408: x 816Ă—x =226Ă—408 x =226Ă—408/816 =113 The fourth proportion is 113.

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