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Finding the Fourth Proportional to 87,294.11, 130,839.61 and 49,880.41

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Solution

The fourth proportional to 87,294.11, 130,839.61 and 49,880.41 is: 74,762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,294.11 : 130,839.61 = 49,880.41 : x
  2. Step 2: Convert to fraction form
    87,294.11/130,839.61 = 49,880.41/x
  3. Step 3: Cross multiply
    87,294.11x = 130,839.61 × 49,880.41
  4. Step 4: Simplify right side
    87,294.11x = 6,526,333,391.04
  5. Step 5: Solve for x
    x = 6,526,333,391.04/87,294.11
  6. Step 6: Final answer
    x = 74,762.59

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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.