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Finding the Fourth Proportional to 86,691.92, 130,024.60 and 27,519.92

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Solution

The fourth proportional to 86,691.92, 130,024.60 and 27,519.92 is: 41,275.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691.92 : 130,024.60 = 27,519.92 : x
  2. Step 2: Convert to fraction form
    86,691.92/130,024.60 = 27,519.92/x
  3. Step 3: Cross multiply
    86,691.92x = 130,024.60 × 27,519.92
  4. Step 4: Simplify right side
    86,691.92x = 3,578,266,590.03
  5. Step 5: Solve for x
    x = 3,578,266,590.03/86,691.92
  6. Step 6: Final answer
    x = 41,275.66

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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.