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Finding the Fourth Proportional to 57,732.56, 86,608.56 and 20,291.12

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Solution

The fourth proportional to 57,732.56, 86,608.56 and 20,291.12 is: 30,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,732.56 : 86,608.56 = 20,291.12 : x
  2. Step 2: Convert to fraction form
    57,732.56/86,608.56 = 20,291.12/x
  3. Step 3: Cross multiply
    57,732.56x = 86,608.56 × 20,291.12
  4. Step 4: Simplify right side
    57,732.56x = 1,757,384,683.99
  5. Step 5: Solve for x
    x = 1,757,384,683.99/57,732.56
  6. Step 6: Final answer
    x = 30,440.10

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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.