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Finding the Fourth Proportional to 66,947.70, 92,388.78 and 36,732.48

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Solution

The fourth proportional to 66,947.70, 92,388.78 and 36,732.48 is: 50,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,947.70 : 92,388.78 = 36,732.48 : x
  2. Step 2: Convert to fraction form
    66,947.70/92,388.78 = 36,732.48/x
  3. Step 3: Cross multiply
    66,947.70x = 92,388.78 × 36,732.48
  4. Step 4: Simplify right side
    66,947.70x = 3,393,669,013.57
  5. Step 5: Solve for x
    x = 3,393,669,013.57/66,947.70
  6. Step 6: Final answer
    x = 50,691.35

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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.