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Finding the Fourth Proportional to 57,245.40, 85,917.50 and 39,727.52

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Solution

The fourth proportional to 57,245.40, 85,917.50 and 39,727.52 is: 59,625.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.40 : 85,917.50 = 39,727.52 : x
  2. Step 2: Convert to fraction form
    57,245.40/85,917.50 = 39,727.52/x
  3. Step 3: Cross multiply
    57,245.40x = 85,917.50 × 39,727.52
  4. Step 4: Simplify right side
    57,245.40x = 3,413,289,199.60
  5. Step 5: Solve for x
    x = 3,413,289,199.60/57,245.40
  6. Step 6: Final answer
    x = 59,625.56

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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.