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Finding the Fourth Proportional to 135,882.50, 187,511.56 and 75,456.97

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Solution

The fourth proportional to 135,882.50, 187,511.56 and 75,456.97 is: 104,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,882.50 : 187,511.56 = 75,456.97 : x
  2. Step 2: Convert to fraction form
    135,882.50/187,511.56 = 75,456.97/x
  3. Step 3: Cross multiply
    135,882.50x = 187,511.56 × 75,456.97
  4. Step 4: Simplify right side
    135,882.50x = 14,149,054,437.71
  5. Step 5: Solve for x
    x = 14,149,054,437.71/135,882.50
  6. Step 6: Final answer
    x = 104,127.13

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1.5x scale

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.