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Finding the Fourth Proportional to 419,687,140.80, 629,530,711.20 and 147,022,478.40

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Solution

The fourth proportional to 419,687,140.80, 629,530,711.20 and 147,022,478.40 is: 220,533,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,687,140.80 : 629,530,711.20 = 147,022,478.40 : x
  2. Step 2: Convert to fraction form
    419,687,140.80/629,530,711.20 = 147,022,478.40/x
  3. Step 3: Cross multiply
    419,687,140.80x = 629,530,711.20 × 147,022,478.40
  4. Step 4: Simplify right side
    419,687,140.80x = 92,555,165,389,538,656
  5. Step 5: Solve for x
    x = 92,555,165,389,538,656/419,687,140.80
  6. Step 6: Final answer
    x = 220,533,717.60

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