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Finding the Fourth Proportional to 57,191.80, 85,787.70 and 38,529.40

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Solution

The fourth proportional to 57,191.80, 85,787.70 and 38,529.40 is: 57,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,191.80 : 85,787.70 = 38,529.40 : x
  2. Step 2: Convert to fraction form
    57,191.80/85,787.70 = 38,529.40/x
  3. Step 3: Cross multiply
    57,191.80x = 85,787.70 × 38,529.40
  4. Step 4: Simplify right side
    57,191.80x = 3,305,348,608.38
  5. Step 5: Solve for x
    x = 3,305,348,608.38/57,191.80
  6. Step 6: Final answer
    x = 57,794.10

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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.