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Finding the Fourth Proportional to 72,791.22, 109,046.90 and 44,629.15

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Solution

The fourth proportional to 72,791.22, 109,046.90 and 44,629.15 is: 66,857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,791.22 : 109,046.90 = 44,629.15 : x
  2. Step 2: Convert to fraction form
    72,791.22/109,046.90 = 44,629.15/x
  3. Step 3: Cross multiply
    72,791.22x = 109,046.90 × 44,629.15
  4. Step 4: Simplify right side
    72,791.22x = 4,866,670,493.45
  5. Step 5: Solve for x
    x = 4,866,670,493.45/72,791.22
  6. Step 6: Final answer
    x = 66,857.93

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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.