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Finding the Fourth Proportional to 80,887.92, 111,612.15 and 45,076.92

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Solution

The fourth proportional to 80,887.92, 111,612.15 and 45,076.92 is: 62,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,887.92 : 111,612.15 = 45,076.92 : x
  2. Step 2: Convert to fraction form
    80,887.92/111,612.15 = 45,076.92/x
  3. Step 3: Cross multiply
    80,887.92x = 111,612.15 × 45,076.92
  4. Step 4: Simplify right side
    80,887.92x = 5,031,131,956.58
  5. Step 5: Solve for x
    x = 5,031,131,956.58/80,887.92
  6. Step 6: Final answer
    x = 62,198.80

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1.5x scale

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.