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Finding the Fourth Proportional to 79,471.38, 109,672.53 and 43,662.29

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Solution

The fourth proportional to 79,471.38, 109,672.53 and 43,662.29 is: 60,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,471.38 : 109,672.53 = 43,662.29 : x
  2. Step 2: Convert to fraction form
    79,471.38/109,672.53 = 43,662.29/x
  3. Step 3: Cross multiply
    79,471.38x = 109,672.53 × 43,662.29
  4. Step 4: Simplify right side
    79,471.38x = 4,788,553,960.31
  5. Step 5: Solve for x
    x = 4,788,553,960.31/79,471.38
  6. Step 6: Final answer
    x = 60,255.08

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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.