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Finding the Fourth Proportional to 40,957.92, 61,436.88 and 11,375.78

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Solution

The fourth proportional to 40,957.92, 61,436.88 and 11,375.78 is: 17,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,957.92 : 61,436.88 = 11,375.78 : x
  2. Step 2: Convert to fraction form
    40,957.92/61,436.88 = 11,375.78/x
  3. Step 3: Cross multiply
    40,957.92x = 61,436.88 × 11,375.78
  4. Step 4: Simplify right side
    40,957.92x = 698,892,123.58
  5. Step 5: Solve for x
    x = 698,892,123.58/40,957.92
  6. Step 6: Final answer
    x = 17,063.66

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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.