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Finding the Fourth Proportional to 72,213.26, 108,229.64 and 34,763.31

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Solution

The fourth proportional to 72,213.26, 108,229.64 and 34,763.31 is: 52,101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.26 : 108,229.64 = 34,763.31 : x
  2. Step 2: Convert to fraction form
    72,213.26/108,229.64 = 34,763.31/x
  3. Step 3: Cross multiply
    72,213.26x = 108,229.64 × 34,763.31
  4. Step 4: Simplify right side
    72,213.26x = 3,762,420,352.69
  5. Step 5: Solve for x
    x = 3,762,420,352.69/72,213.26
  6. Step 6: Final answer
    x = 52,101.52

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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.