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Finding the Fourth Proportional to 355,318,761.20, 532,978,141.80 and 274,597,660.40

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Solution

The fourth proportional to 355,318,761.20, 532,978,141.80 and 274,597,660.40 is: 411,896,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,318,761.20 : 532,978,141.80 = 274,597,660.40 : x
  2. Step 2: Convert to fraction form
    355,318,761.20/532,978,141.80 = 274,597,660.40/x
  3. Step 3: Cross multiply
    355,318,761.20x = 532,978,141.80 × 274,597,660.40
  4. Step 4: Simplify right side
    355,318,761.20x = 146,354,550,782,619,424
  5. Step 5: Solve for x
    x = 146,354,550,782,619,424/355,318,761.20
  6. Step 6: Final answer
    x = 411,896,490.60

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