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Finding the Fourth Proportional to 83,910.90, 125,866.68 and 33,991.93

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Solution

The fourth proportional to 83,910.90, 125,866.68 and 33,991.93 is: 50,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,910.90 : 125,866.68 = 33,991.93 : x
  2. Step 2: Convert to fraction form
    83,910.90/125,866.68 = 33,991.93/x
  3. Step 3: Cross multiply
    83,910.90x = 125,866.68 × 33,991.93
  4. Step 4: Simplify right side
    83,910.90x = 4,278,451,375.89
  5. Step 5: Solve for x
    x = 4,278,451,375.89/83,910.90
  6. Step 6: Final answer
    x = 50,988.03

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1.5x scale

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.