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Finding the Fourth Proportional to 462,121.20, 693,181.80 and 129,697.20

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Solution

The fourth proportional to 462,121.20, 693,181.80 and 129,697.20 is: 194,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,121.20 : 693,181.80 = 129,697.20 : x
  2. Step 2: Convert to fraction form
    462,121.20/693,181.80 = 129,697.20/x
  3. Step 3: Cross multiply
    462,121.20x = 693,181.80 × 129,697.20
  4. Step 4: Simplify right side
    462,121.20x = 89,903,738,550.96
  5. Step 5: Solve for x
    x = 89,903,738,550.96/462,121.20
  6. Step 6: Final answer
    x = 194,545.80

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