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Finding the Fourth Proportional to 67,039.20, 100,623.60 and 33,796.80

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Solution

The fourth proportional to 67,039.20, 100,623.60 and 33,796.80 is: 50,727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,039.20 : 100,623.60 = 33,796.80 : x
  2. Step 2: Convert to fraction form
    67,039.20/100,623.60 = 33,796.80/x
  3. Step 3: Cross multiply
    67,039.20x = 100,623.60 × 33,796.80
  4. Step 4: Simplify right side
    67,039.20x = 3,400,755,684.48
  5. Step 5: Solve for x
    x = 3,400,755,684.48/67,039.20
  6. Step 6: Final answer
    x = 50,727.87

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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.