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Finding the Fourth Proportional to 91,418.77, 137,063.76 and 35,211.79

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Solution

The fourth proportional to 91,418.77, 137,063.76 and 35,211.79 is: 52,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,418.77 : 137,063.76 = 35,211.79 : x
  2. Step 2: Convert to fraction form
    91,418.77/137,063.76 = 35,211.79/x
  3. Step 3: Cross multiply
    91,418.77x = 137,063.76 × 35,211.79
  4. Step 4: Simplify right side
    91,418.77x = 4,826,260,333.73
  5. Step 5: Solve for x
    x = 4,826,260,333.73/91,418.77
  6. Step 6: Final answer
    x = 52,792.88

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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.