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Finding the Fourth Proportional to 57,200.70, 85,671.45 and 33,872.70

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Solution

The fourth proportional to 57,200.70, 85,671.45 and 33,872.70 is: 50,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,200.70 : 85,671.45 = 33,872.70 : x
  2. Step 2: Convert to fraction form
    57,200.70/85,671.45 = 33,872.70/x
  3. Step 3: Cross multiply
    57,200.70x = 85,671.45 × 33,872.70
  4. Step 4: Simplify right side
    57,200.70x = 2,901,923,324.42
  5. Step 5: Solve for x
    x = 2,901,923,324.42/57,200.70
  6. Step 6: Final answer
    x = 50,732.30

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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.