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Finding the Fourth Proportional to 311,921.70, 467,882.55 and 125,067.30

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Solution

The fourth proportional to 311,921.70, 467,882.55 and 125,067.30 is: 187,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,921.70 : 467,882.55 = 125,067.30 : x
  2. Step 2: Convert to fraction form
    311,921.70/467,882.55 = 125,067.30/x
  3. Step 3: Cross multiply
    311,921.70x = 467,882.55 × 125,067.30
  4. Step 4: Simplify right side
    311,921.70x = 58,516,807,245.62
  5. Step 5: Solve for x
    x = 58,516,807,245.62/311,921.70
  6. Step 6: Final answer
    x = 187,600.95

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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.