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Finding the Fourth Proportional to 92,502.03, 138,789.90 and 55,079.76

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Solution

The fourth proportional to 92,502.03, 138,789.90 and 55,079.76 is: 82,641.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,502.03 : 138,789.90 = 55,079.76 : x
  2. Step 2: Convert to fraction form
    92,502.03/138,789.90 = 55,079.76/x
  3. Step 3: Cross multiply
    92,502.03x = 138,789.90 × 55,079.76
  4. Step 4: Simplify right side
    92,502.03x = 7,644,514,382.42
  5. Step 5: Solve for x
    x = 7,644,514,382.42/92,502.03
  6. Step 6: Final answer
    x = 82,641.59

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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.