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Finding the Fourth Proportional to 17,687.92, 26,531.78 and 5,375.92

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Solution

The fourth proportional to 17,687.92, 26,531.78 and 5,375.92 is: 8,063.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,687.92 : 26,531.78 = 5,375.92 : x
  2. Step 2: Convert to fraction form
    17,687.92/26,531.78 = 5,375.92/x
  3. Step 3: Cross multiply
    17,687.92x = 26,531.78 × 5,375.92
  4. Step 4: Simplify right side
    17,687.92x = 142,632,726.74
  5. Step 5: Solve for x
    x = 142,632,726.74/17,687.92
  6. Step 6: Final answer
    x = 8,063.85

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1.5x scale

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.