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Finding the Fourth Proportional to 485,168.20, 726,002.70 and 327,704.20

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Solution

The fourth proportional to 485,168.20, 726,002.70 and 327,704.20 is: 490,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,168.20 : 726,002.70 = 327,704.20 : x
  2. Step 2: Convert to fraction form
    485,168.20/726,002.70 = 327,704.20/x
  3. Step 3: Cross multiply
    485,168.20x = 726,002.70 × 327,704.20
  4. Step 4: Simplify right side
    485,168.20x = 237,914,134,001.34
  5. Step 5: Solve for x
    x = 237,914,134,001.34/485,168.20
  6. Step 6: Final answer
    x = 490,374.54

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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.