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Finding the Fourth Proportional to 363,591.96, 545,425.18 and 139,141.17

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Solution

The fourth proportional to 363,591.96, 545,425.18 and 139,141.17 is: 208,726.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,591.96 : 545,425.18 = 139,141.17 : x
  2. Step 2: Convert to fraction form
    363,591.96/545,425.18 = 139,141.17/x
  3. Step 3: Cross multiply
    363,591.96x = 545,425.18 × 139,141.17
  4. Step 4: Simplify right side
    363,591.96x = 75,891,100,289.57
  5. Step 5: Solve for x
    x = 75,891,100,289.57/363,591.96
  6. Step 6: Final answer
    x = 208,726.01

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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.