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Finding the Fourth Proportional to 66,691.89, 92,034.56 and 36,064.74

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Solution

The fourth proportional to 66,691.89, 92,034.56 and 36,064.74 is: 49,769.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,691.89 : 92,034.56 = 36,064.74 : x
  2. Step 2: Convert to fraction form
    66,691.89/92,034.56 = 36,064.74/x
  3. Step 3: Cross multiply
    66,691.89x = 92,034.56 × 36,064.74
  4. Step 4: Simplify right side
    66,691.89x = 3,319,202,912.71
  5. Step 5: Solve for x
    x = 3,319,202,912.71/66,691.89
  6. Step 6: Final answer
    x = 49,769.21

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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.