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Finding the Fourth Proportional to 61,889.16, 85,375.98 and 41,720.52

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Solution

The fourth proportional to 61,889.16, 85,375.98 and 41,720.52 is: 57,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,889.16 : 85,375.98 = 41,720.52 : x
  2. Step 2: Convert to fraction form
    61,889.16/85,375.98 = 41,720.52/x
  3. Step 3: Cross multiply
    61,889.16x = 85,375.98 × 41,720.52
  4. Step 4: Simplify right side
    61,889.16x = 3,561,930,281.11
  5. Step 5: Solve for x
    x = 3,561,930,281.11/61,889.16
  6. Step 6: Final answer
    x = 57,553.38

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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.