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Finding the Fourth Proportional to 92,079.38, 138,121.74 and 35,917.22

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Solution

The fourth proportional to 92,079.38, 138,121.74 and 35,917.22 is: 53,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,079.38 : 138,121.74 = 35,917.22 : x
  2. Step 2: Convert to fraction form
    92,079.38/138,121.74 = 35,917.22/x
  3. Step 3: Cross multiply
    92,079.38x = 138,121.74 × 35,917.22
  4. Step 4: Simplify right side
    92,079.38x = 4,960,948,922.36
  5. Step 5: Solve for x
    x = 4,960,948,922.36/92,079.38
  6. Step 6: Final answer
    x = 53,876.87

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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.