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Finding the Fourth Proportional to 18,382.98, 25,365.78 and 10,824.88

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Solution

The fourth proportional to 18,382.98, 25,365.78 and 10,824.88 is: 14,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.98 : 25,365.78 = 10,824.88 : x
  2. Step 2: Convert to fraction form
    18,382.98/25,365.78 = 10,824.88/x
  3. Step 3: Cross multiply
    18,382.98x = 25,365.78 × 10,824.88
  4. Step 4: Simplify right side
    18,382.98x = 274,581,524.61
  5. Step 5: Solve for x
    x = 274,581,524.61/18,382.98
  6. Step 6: Final answer
    x = 14,936.73

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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.