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Finding the Fourth Proportional to 136,593.48, 188,523.90 and 79,269.48

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Solution

The fourth proportional to 136,593.48, 188,523.90 and 79,269.48 is: 109,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,593.48 : 188,523.90 = 79,269.48 : x
  2. Step 2: Convert to fraction form
    136,593.48/188,523.90 = 79,269.48/x
  3. Step 3: Cross multiply
    136,593.48x = 188,523.90 × 79,269.48
  4. Step 4: Simplify right side
    136,593.48x = 14,944,191,520.57
  5. Step 5: Solve for x
    x = 14,944,191,520.57/136,593.48
  6. Step 6: Final answer
    x = 109,406.33

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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.