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Finding the Fourth Proportional to 79,684.97, 109,964.32 and 43,874.19

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Solution

The fourth proportional to 79,684.97, 109,964.32 and 43,874.19 is: 60,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,684.97 : 109,964.32 = 43,874.19 : x
  2. Step 2: Convert to fraction form
    79,684.97/109,964.32 = 43,874.19/x
  3. Step 3: Cross multiply
    79,684.97x = 109,964.32 × 43,874.19
  4. Step 4: Simplify right side
    79,684.97x = 4,824,595,359.22
  5. Step 5: Solve for x
    x = 4,824,595,359.22/79,684.97
  6. Step 6: Final answer
    x = 60,545.87

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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.