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Finding the Fourth Proportional to 431,568.02, 647,324.89 and 132,024.80

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Solution

The fourth proportional to 431,568.02, 647,324.89 and 132,024.80 is: 198,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,568.02 : 647,324.89 = 132,024.80 : x
  2. Step 2: Convert to fraction form
    431,568.02/647,324.89 = 132,024.80/x
  3. Step 3: Cross multiply
    431,568.02x = 647,324.89 × 132,024.80
  4. Step 4: Simplify right side
    431,568.02x = 85,462,940,425.52
  5. Step 5: Solve for x
    x = 85,462,940,425.52/431,568.02
  6. Step 6: Final answer
    x = 198,028.90

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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.