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Finding the Fourth Proportional to 488,781.43, 674,545.32 and 273,990.49

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Solution

The fourth proportional to 488,781.43, 674,545.32 and 273,990.49 is: 378,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,781.43 : 674,545.32 = 273,990.49 : x
  2. Step 2: Convert to fraction form
    488,781.43/674,545.32 = 273,990.49/x
  3. Step 3: Cross multiply
    488,781.43x = 674,545.32 × 273,990.49
  4. Step 4: Simplify right side
    488,781.43x = 184,819,002,754.01
  5. Step 5: Solve for x
    x = 184,819,002,754.01/488,781.43
  6. Step 6: Final answer
    x = 378,121.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.