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Finding the Fourth Proportional to 543,761.02, 815,632.89 and 133,434.73

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Solution

The fourth proportional to 543,761.02, 815,632.89 and 133,434.73 is: 200,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,761.02 : 815,632.89 = 133,434.73 : x
  2. Step 2: Convert to fraction form
    543,761.02/815,632.89 = 133,434.73/x
  3. Step 3: Cross multiply
    543,761.02x = 815,632.89 × 133,434.73
  4. Step 4: Simplify right side
    543,761.02x = 108,833,754,456.27
  5. Step 5: Solve for x
    x = 108,833,754,456.27/543,761.02
  6. Step 6: Final answer
    x = 200,149.97

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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.