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Finding the Fourth Proportional to 363,981.80, 545,972.70 and 238,010.60

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Solution

The fourth proportional to 363,981.80, 545,972.70 and 238,010.60 is: 357,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,981.80 : 545,972.70 = 238,010.60 : x
  2. Step 2: Convert to fraction form
    363,981.80/545,972.70 = 238,010.60/x
  3. Step 3: Cross multiply
    363,981.80x = 545,972.70 × 238,010.60
  4. Step 4: Simplify right side
    363,981.80x = 129,947,289,910.62
  5. Step 5: Solve for x
    x = 129,947,289,910.62/363,981.80
  6. Step 6: Final answer
    x = 357,015.90

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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.