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Finding the Fourth Proportional to 79,487.02, 109,691.31 and 43,676.26

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Solution

The fourth proportional to 79,487.02, 109,691.31 and 43,676.26 is: 60,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,487.02 : 109,691.31 = 43,676.26 : x
  2. Step 2: Convert to fraction form
    79,487.02/109,691.31 = 43,676.26/x
  3. Step 3: Cross multiply
    79,487.02x = 109,691.31 × 43,676.26
  4. Step 4: Simplify right side
    79,487.02x = 4,790,906,175.30
  5. Step 5: Solve for x
    x = 4,790,906,175.30/79,487.02
  6. Step 6: Final answer
    x = 60,272.81

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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.