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Finding the Fourth Proportional to 71,621.86, 107,381.36 and 33,649.73

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Solution

The fourth proportional to 71,621.86, 107,381.36 and 33,649.73 is: 50,450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,621.86 : 107,381.36 = 33,649.73 : x
  2. Step 2: Convert to fraction form
    71,621.86/107,381.36 = 33,649.73/x
  3. Step 3: Cross multiply
    71,621.86x = 107,381.36 × 33,649.73
  4. Step 4: Simplify right side
    71,621.86x = 3,613,353,578.97
  5. Step 5: Solve for x
    x = 3,613,353,578.97/71,621.86
  6. Step 6: Final answer
    x = 50,450.43

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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.