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Finding the Fourth Proportional to 71,245.80, 106,722.90 and 36,205.20

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Solution

The fourth proportional to 71,245.80, 106,722.90 and 36,205.20 is: 54,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,245.80 : 106,722.90 = 36,205.20 : x
  2. Step 2: Convert to fraction form
    71,245.80/106,722.90 = 36,205.20/x
  3. Step 3: Cross multiply
    71,245.80x = 106,722.90 × 36,205.20
  4. Step 4: Simplify right side
    71,245.80x = 3,863,923,939.08
  5. Step 5: Solve for x
    x = 3,863,923,939.08/71,245.80
  6. Step 6: Final answer
    x = 54,233.71

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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.