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Finding the Fourth Proportional to 57,193.80, 85,790.70 and 38,531.40

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Solution

The fourth proportional to 57,193.80, 85,790.70 and 38,531.40 is: 57,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,193.80 : 85,790.70 = 38,531.40 : x
  2. Step 2: Convert to fraction form
    57,193.80/85,790.70 = 38,531.40/x
  3. Step 3: Cross multiply
    57,193.80x = 85,790.70 × 38,531.40
  4. Step 4: Simplify right side
    57,193.80x = 3,305,635,777.98
  5. Step 5: Solve for x
    x = 3,305,635,777.98/57,193.80
  6. Step 6: Final answer
    x = 57,797.10

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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.