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Finding the Fourth Proportional to 72,872.97, 109,062.56 and 44,810.80

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Solution

The fourth proportional to 72,872.97, 109,062.56 and 44,810.80 is: 67,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,872.97 : 109,062.56 = 44,810.80 : x
  2. Step 2: Convert to fraction form
    72,872.97/109,062.56 = 44,810.80/x
  3. Step 3: Cross multiply
    72,872.97x = 109,062.56 × 44,810.80
  4. Step 4: Simplify right side
    72,872.97x = 4,887,180,290.99
  5. Step 5: Solve for x
    x = 4,887,180,290.99/72,872.97
  6. Step 6: Final answer
    x = 67,064.38

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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.