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Finding the Fourth Proportional to 79,486.57, 109,691.35 and 43,676.52

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Solution

The fourth proportional to 79,486.57, 109,691.35 and 43,676.52 is: 60,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,486.57 : 109,691.35 = 43,676.52 : x
  2. Step 2: Convert to fraction form
    79,486.57/109,691.35 = 43,676.52/x
  3. Step 3: Cross multiply
    79,486.57x = 109,691.35 × 43,676.52
  4. Step 4: Simplify right side
    79,486.57x = 4,790,936,442.10
  5. Step 5: Solve for x
    x = 4,790,936,442.10/79,486.57
  6. Step 6: Final answer
    x = 60,273.53

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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.