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Finding the Fourth Proportional to 474,061.20, 712,355.40 and 260,998.80

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Solution

The fourth proportional to 474,061.20, 712,355.40 and 260,998.80 is: 392,193.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,061.20 : 712,355.40 = 260,998.80 : x
  2. Step 2: Convert to fraction form
    474,061.20/712,355.40 = 260,998.80/x
  3. Step 3: Cross multiply
    474,061.20x = 712,355.40 × 260,998.80
  4. Step 4: Simplify right side
    474,061.20x = 185,923,904,573.52
  5. Step 5: Solve for x
    x = 185,923,904,573.52/474,061.20
  6. Step 6: Final answer
    x = 392,193.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.