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Finding the Fourth Proportional to 71,496.70, 98,677.29 and 39,675.82

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Solution

The fourth proportional to 71,496.70, 98,677.29 and 39,675.82 is: 54,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,496.70 : 98,677.29 = 39,675.82 : x
  2. Step 2: Convert to fraction form
    71,496.70/98,677.29 = 39,675.82/x
  3. Step 3: Cross multiply
    71,496.70x = 98,677.29 × 39,675.82
  4. Step 4: Simplify right side
    71,496.70x = 3,915,102,396.13
  5. Step 5: Solve for x
    x = 3,915,102,396.13/71,496.70
  6. Step 6: Final answer
    x = 54,759.20

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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.