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Finding the Fourth Proportional to 61,865.87, 85,375.13 and 33,571.55

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Solution

The fourth proportional to 61,865.87, 85,375.13 and 33,571.55 is: 46,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,865.87 : 85,375.13 = 33,571.55 : x
  2. Step 2: Convert to fraction form
    61,865.87/85,375.13 = 33,571.55/x
  3. Step 3: Cross multiply
    61,865.87x = 85,375.13 × 33,571.55
  4. Step 4: Simplify right side
    61,865.87x = 2,866,175,491.13
  5. Step 5: Solve for x
    x = 2,866,175,491.13/61,865.87
  6. Step 6: Final answer
    x = 46,328.87

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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.