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Finding the Fourth Proportional to 38,793.60, 58,190.40 and 13,839.93

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Solution

The fourth proportional to 38,793.60, 58,190.40 and 13,839.93 is: 20,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,793.60 : 58,190.40 = 13,839.93 : x
  2. Step 2: Convert to fraction form
    38,793.60/58,190.40 = 13,839.93/x
  3. Step 3: Cross multiply
    38,793.60x = 58,190.40 × 13,839.93
  4. Step 4: Simplify right side
    38,793.60x = 805,351,062.67
  5. Step 5: Solve for x
    x = 805,351,062.67/38,793.60
  6. Step 6: Final answer
    x = 20,759.90

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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.