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Finding the Fourth Proportional to 92,565.40, 138,912.90 and 40,012.60

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Solution

The fourth proportional to 92,565.40, 138,912.90 and 40,012.60 is: 60,046.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,565.40 : 138,912.90 = 40,012.60 : x
  2. Step 2: Convert to fraction form
    92,565.40/138,912.90 = 40,012.60/x
  3. Step 3: Cross multiply
    92,565.40x = 138,912.90 × 40,012.60
  4. Step 4: Simplify right side
    92,565.40x = 5,558,266,302.54
  5. Step 5: Solve for x
    x = 5,558,266,302.54/92,565.40
  6. Step 6: Final answer
    x = 60,046.91

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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.