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Finding the Fourth Proportional to 80,862.88, 121,317.78 and 33,469.24

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Solution

The fourth proportional to 80,862.88, 121,317.78 and 33,469.24 is: 50,213.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,862.88 : 121,317.78 = 33,469.24 : x
  2. Step 2: Convert to fraction form
    80,862.88/121,317.78 = 33,469.24/x
  3. Step 3: Cross multiply
    80,862.88x = 121,317.78 × 33,469.24
  4. Step 4: Simplify right side
    80,862.88x = 4,060,413,895.09
  5. Step 5: Solve for x
    x = 4,060,413,895.09/80,862.88
  6. Step 6: Final answer
    x = 50,213.57

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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.