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Finding the Fourth Proportional to 57,365.67, 79,163.60 and 31,872.15

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Solution

The fourth proportional to 57,365.67, 79,163.60 and 31,872.15 is: 43,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,365.67 : 79,163.60 = 31,872.15 : x
  2. Step 2: Convert to fraction form
    57,365.67/79,163.60 = 31,872.15/x
  3. Step 3: Cross multiply
    57,365.67x = 79,163.60 × 31,872.15
  4. Step 4: Simplify right side
    57,365.67x = 2,523,113,974.38
  5. Step 5: Solve for x
    x = 2,523,113,974.38/57,365.67
  6. Step 6: Final answer
    x = 43,982.99

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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.