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Finding the Fourth Proportional to 136,833.80, 205,249.28 and 43,339.55

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Solution

The fourth proportional to 136,833.80, 205,249.28 and 43,339.55 is: 65,008.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,833.80 : 205,249.28 = 43,339.55 : x
  2. Step 2: Convert to fraction form
    136,833.80/205,249.28 = 43,339.55/x
  3. Step 3: Cross multiply
    136,833.80x = 205,249.28 × 43,339.55
  4. Step 4: Simplify right side
    136,833.80x = 8,895,410,190.08
  5. Step 5: Solve for x
    x = 8,895,410,190.08/136,833.80
  6. Step 6: Final answer
    x = 65,008.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.