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Finding the Fourth Proportional to 80,240.31, 110,696.81 and 48,391.52

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Solution

The fourth proportional to 80,240.31, 110,696.81 and 48,391.52 is: 66,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,240.31 : 110,696.81 = 48,391.52 : x
  2. Step 2: Convert to fraction form
    80,240.31/110,696.81 = 48,391.52/x
  3. Step 3: Cross multiply
    80,240.31x = 110,696.81 × 48,391.52
  4. Step 4: Simplify right side
    80,240.31x = 5,356,786,099.61
  5. Step 5: Solve for x
    x = 5,356,786,099.61/80,240.31
  6. Step 6: Final answer
    x = 66,759.29

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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.