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Finding the Fourth Proportional to 61,082.90, 91,519.14 and 47,750.72

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Solution

The fourth proportional to 61,082.90, 91,519.14 and 47,750.72 is: 71,543.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,082.90 : 91,519.14 = 47,750.72 : x
  2. Step 2: Convert to fraction form
    61,082.90/91,519.14 = 47,750.72/x
  3. Step 3: Cross multiply
    61,082.90x = 91,519.14 × 47,750.72
  4. Step 4: Simplify right side
    61,082.90x = 4,370,104,828.78
  5. Step 5: Solve for x
    x = 4,370,104,828.78/61,082.90
  6. Step 6: Final answer
    x = 71,543.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.