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Finding the Fourth Proportional to 716,116.74, 988,221.36 and 393,826.83

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Solution

The fourth proportional to 716,116.74, 988,221.36 and 393,826.83 is: 543,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,116.74 : 988,221.36 = 393,826.83 : x
  2. Step 2: Convert to fraction form
    716,116.74/988,221.36 = 393,826.83/x
  3. Step 3: Cross multiply
    716,116.74x = 988,221.36 × 393,826.83
  4. Step 4: Simplify right side
    716,116.74x = 389,188,085,547.09
  5. Step 5: Solve for x
    x = 389,188,085,547.09/716,116.74
  6. Step 6: Final answer
    x = 543,470.17

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