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Finding the Fourth Proportional to 431,726,978.18, 647,635,831.11 and 140,616,769.59

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Solution

The fourth proportional to 431,726,978.18, 647,635,831.11 and 140,616,769.59 is: 210,939,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,726,978.18 : 647,635,831.11 = 140,616,769.59 : x
  2. Step 2: Convert to fraction form
    431,726,978.18/647,635,831.11 = 140,616,769.59/x
  3. Step 3: Cross multiply
    431,726,978.18x = 647,635,831.11 × 140,616,769.59
  4. Step 4: Simplify right side
    431,726,978.18x = 91,068,458,441,423,024
  5. Step 5: Solve for x
    x = 91,068,458,441,423,024/431,726,978.18
  6. Step 6: Final answer
    x = 210,939,929.74

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