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Finding the Fourth Proportional to 447,691.95, 671,564.15 and 127,819.20

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Solution

The fourth proportional to 447,691.95, 671,564.15 and 127,819.20 is: 191,736.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,691.95 : 671,564.15 = 127,819.20 : x
  2. Step 2: Convert to fraction form
    447,691.95/671,564.15 = 127,819.20/x
  3. Step 3: Cross multiply
    447,691.95x = 671,564.15 × 127,819.20
  4. Step 4: Simplify right side
    447,691.95x = 85,838,791,762.58
  5. Step 5: Solve for x
    x = 85,838,791,762.58/447,691.95
  6. Step 6: Final answer
    x = 191,736.29

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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.