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Finding the Fourth Proportional to 83,998.80, 126,192.60 and 57,754.80

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Solution

The fourth proportional to 83,998.80, 126,192.60 and 57,754.80 is: 86,765.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.80 : 126,192.60 = 57,754.80 : x
  2. Step 2: Convert to fraction form
    83,998.80/126,192.60 = 57,754.80/x
  3. Step 3: Cross multiply
    83,998.80x = 126,192.60 × 57,754.80
  4. Step 4: Simplify right side
    83,998.80x = 7,288,228,374.48
  5. Step 5: Solve for x
    x = 7,288,228,374.48/83,998.80
  6. Step 6: Final answer
    x = 86,765.86

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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.