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Finding the Fourth Proportional to 484,234.20, 726,132.60 and 217,857.60

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Solution

The fourth proportional to 484,234.20, 726,132.60 and 217,857.60 is: 326,688.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,234.20 : 726,132.60 = 217,857.60 : x
  2. Step 2: Convert to fraction form
    484,234.20/726,132.60 = 217,857.60/x
  3. Step 3: Cross multiply
    484,234.20x = 726,132.60 × 217,857.60
  4. Step 4: Simplify right side
    484,234.20x = 158,193,505,517.76
  5. Step 5: Solve for x
    x = 158,193,505,517.76/484,234.20
  6. Step 6: Final answer
    x = 326,688.01

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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.