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4 August, 12:30

If the mean is 71.5 and three of the numbers are 58, 76, 88 what is the fourth number

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  1. 4 August, 12:46
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    (58+76+88+x) / 4=71.5

    (58+76+88+x) = 286

    x=286 - (58+76+88) = 64
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