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Finding the Fourth Proportional to 431,515.13, 595,469.21 and 240,491.61

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Solution

The fourth proportional to 431,515.13, 595,469.21 and 240,491.61 is: 331,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,515.13 : 595,469.21 = 240,491.61 : x
  2. Step 2: Convert to fraction form
    431,515.13/595,469.21 = 240,491.61/x
  3. Step 3: Cross multiply
    431,515.13x = 595,469.21 × 240,491.61
  4. Step 4: Simplify right side
    431,515.13x = 143,205,347,815.87
  5. Step 5: Solve for x
    x = 143,205,347,815.87/431,515.13
  6. Step 6: Final answer
    x = 331,866.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.