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Finding the Fourth Proportional to 18,625.65, 27,922.77 and 8,087.73

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Solution

The fourth proportional to 18,625.65, 27,922.77 and 8,087.73 is: 12,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.65 : 27,922.77 = 8,087.73 : x
  2. Step 2: Convert to fraction form
    18,625.65/27,922.77 = 8,087.73/x
  3. Step 3: Cross multiply
    18,625.65x = 27,922.77 × 8,087.73
  4. Step 4: Simplify right side
    18,625.65x = 225,831,824.61
  5. Step 5: Solve for x
    x = 225,831,824.61/18,625.65
  6. Step 6: Final answer
    x = 12,124.78

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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.