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Finding the Fourth Proportional to 59,760.20, 89,640.30 and 17,640.86

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Solution

The fourth proportional to 59,760.20, 89,640.30 and 17,640.86 is: 26,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,760.20 : 89,640.30 = 17,640.86 : x
  2. Step 2: Convert to fraction form
    59,760.20/89,640.30 = 17,640.86/x
  3. Step 3: Cross multiply
    59,760.20x = 89,640.30 × 17,640.86
  4. Step 4: Simplify right side
    59,760.20x = 1,581,331,982.66
  5. Step 5: Solve for x
    x = 1,581,331,982.66/59,760.20
  6. Step 6: Final answer
    x = 26,461.29

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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.