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Finding the Fourth Proportional to 392,553.60, 541,726.56 and 222,790.56

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Solution

The fourth proportional to 392,553.60, 541,726.56 and 222,790.56 is: 307,452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,553.60 : 541,726.56 = 222,790.56 : x
  2. Step 2: Convert to fraction form
    392,553.60/541,726.56 = 222,790.56/x
  3. Step 3: Cross multiply
    392,553.60x = 541,726.56 × 222,790.56
  4. Step 4: Simplify right side
    392,553.60x = 120,691,563,669.27
  5. Step 5: Solve for x
    x = 120,691,563,669.27/392,553.60
  6. Step 6: Final answer
    x = 307,452.44

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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.