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Finding the Fourth Proportional to 412,974.80, 619,462.20 and 132,520.40

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Solution

The fourth proportional to 412,974.80, 619,462.20 and 132,520.40 is: 198,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,974.80 : 619,462.20 = 132,520.40 : x
  2. Step 2: Convert to fraction form
    412,974.80/619,462.20 = 132,520.40/x
  3. Step 3: Cross multiply
    412,974.80x = 619,462.20 × 132,520.40
  4. Step 4: Simplify right side
    412,974.80x = 82,091,378,528.88
  5. Step 5: Solve for x
    x = 82,091,378,528.88/412,974.80
  6. Step 6: Final answer
    x = 198,780.60

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