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Finding the Fourth Proportional to 447,757.20, 671,635.80 and 132,213.60

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Solution

The fourth proportional to 447,757.20, 671,635.80 and 132,213.60 is: 198,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,757.20 : 671,635.80 = 132,213.60 : x
  2. Step 2: Convert to fraction form
    447,757.20/671,635.80 = 132,213.60/x
  3. Step 3: Cross multiply
    447,757.20x = 671,635.80 × 132,213.60
  4. Step 4: Simplify right side
    447,757.20x = 88,799,387,006.88
  5. Step 5: Solve for x
    x = 88,799,387,006.88/447,757.20
  6. Step 6: Final answer
    x = 198,320.40

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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.