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Finding the Fourth Proportional to 67,197.68, 92,728.02 and 39,972.26

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Solution

The fourth proportional to 67,197.68, 92,728.02 and 39,972.26 is: 55,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,197.68 : 92,728.02 = 39,972.26 : x
  2. Step 2: Convert to fraction form
    67,197.68/92,728.02 = 39,972.26/x
  3. Step 3: Cross multiply
    67,197.68x = 92,728.02 × 39,972.26
  4. Step 4: Simplify right side
    67,197.68x = 3,706,548,524.73
  5. Step 5: Solve for x
    x = 3,706,548,524.73/67,197.68
  6. Step 6: Final answer
    x = 55,158.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.