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Finding the Fourth Proportional to 79,531.62, 109,755.73 and 43,722.53

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Solution

The fourth proportional to 79,531.62, 109,755.73 and 43,722.53 is: 60,338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,531.62 : 109,755.73 = 43,722.53 : x
  2. Step 2: Convert to fraction form
    79,531.62/109,755.73 = 43,722.53/x
  3. Step 3: Cross multiply
    79,531.62x = 109,755.73 × 43,722.53
  4. Step 4: Simplify right side
    79,531.62x = 4,798,797,869.12
  5. Step 5: Solve for x
    x = 4,798,797,869.12/79,531.62
  6. Step 6: Final answer
    x = 60,338.24

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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.