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Finding the Fourth Proportional to 57,245.67, 85,851.01 and 39,589.80

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Solution

The fourth proportional to 57,245.67, 85,851.01 and 39,589.80 is: 59,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.67 : 85,851.01 = 39,589.80 : x
  2. Step 2: Convert to fraction form
    57,245.67/85,851.01 = 39,589.80/x
  3. Step 3: Cross multiply
    57,245.67x = 85,851.01 × 39,589.80
  4. Step 4: Simplify right side
    57,245.67x = 3,398,824,315.70
  5. Step 5: Solve for x
    x = 3,398,824,315.70/57,245.67
  6. Step 6: Final answer
    x = 59,372.60

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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.