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Finding the Fourth Proportional to 92,371.85, 138,611.60 and 39,060.65

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Solution

The fourth proportional to 92,371.85, 138,611.60 and 39,060.65 is: 58,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,371.85 : 138,611.60 = 39,060.65 : x
  2. Step 2: Convert to fraction form
    92,371.85/138,611.60 = 39,060.65/x
  3. Step 3: Cross multiply
    92,371.85x = 138,611.60 × 39,060.65
  4. Step 4: Simplify right side
    92,371.85x = 5,414,259,193.54
  5. Step 5: Solve for x
    x = 5,414,259,193.54/92,371.85
  6. Step 6: Final answer
    x = 58,613.74

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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.