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Finding the Fourth Proportional to 413,470.97, 619,812.78 and 132,791.39

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Solution

The fourth proportional to 413,470.97, 619,812.78 and 132,791.39 is: 199,060.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,470.97 : 619,812.78 = 132,791.39 : x
  2. Step 2: Convert to fraction form
    413,470.97/619,812.78 = 132,791.39/x
  3. Step 3: Cross multiply
    413,470.97x = 619,812.78 × 132,791.39
  4. Step 4: Simplify right side
    413,470.97x = 82,305,800,595.96
  5. Step 5: Solve for x
    x = 82,305,800,595.96/413,470.97
  6. Step 6: Final answer
    x = 199,060.65

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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.