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Finding the Fourth Proportional to 86,704.75, 119,662.28 and 48,981.43

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Solution

The fourth proportional to 86,704.75, 119,662.28 and 48,981.43 is: 67,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,704.75 : 119,662.28 = 48,981.43 : x
  2. Step 2: Convert to fraction form
    86,704.75/119,662.28 = 48,981.43/x
  3. Step 3: Cross multiply
    86,704.75x = 119,662.28 × 48,981.43
  4. Step 4: Simplify right side
    86,704.75x = 5,861,229,591.46
  5. Step 5: Solve for x
    x = 5,861,229,591.46/86,704.75
  6. Step 6: Final answer
    x = 67,599.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.