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Finding the Fourth Proportional to 57,236.40, 85,760.64 and 55,049.40

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Solution

The fourth proportional to 57,236.40, 85,760.64 and 55,049.40 is: 82,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,236.40 : 85,760.64 = 55,049.40 : x
  2. Step 2: Convert to fraction form
    57,236.40/85,760.64 = 55,049.40/x
  3. Step 3: Cross multiply
    57,236.40x = 85,760.64 × 55,049.40
  4. Step 4: Simplify right side
    57,236.40x = 4,721,071,775.62
  5. Step 5: Solve for x
    x = 4,721,071,775.62/57,236.40
  6. Step 6: Final answer
    x = 82,483.73

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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.