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Finding the Fourth Proportional to 57,412.44, 79,229.20 and 33,216.80

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Solution

The fourth proportional to 57,412.44, 79,229.20 and 33,216.80 is: 45,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,412.44 : 79,229.20 = 33,216.80 : x
  2. Step 2: Convert to fraction form
    57,412.44/79,229.20 = 33,216.80/x
  3. Step 3: Cross multiply
    57,412.44x = 79,229.20 × 33,216.80
  4. Step 4: Simplify right side
    57,412.44x = 2,631,740,490.56
  5. Step 5: Solve for x
    x = 2,631,740,490.56/57,412.44
  6. Step 6: Final answer
    x = 45,839.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.