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Finding the Fourth Proportional to 18,149.12, 27,199.79 and 16,965.30

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Solution

The fourth proportional to 18,149.12, 27,199.79 and 16,965.30 is: 25,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.12 : 27,199.79 = 16,965.30 : x
  2. Step 2: Convert to fraction form
    18,149.12/27,199.79 = 16,965.30/x
  3. Step 3: Cross multiply
    18,149.12x = 27,199.79 × 16,965.30
  4. Step 4: Simplify right side
    18,149.12x = 461,452,597.29
  5. Step 5: Solve for x
    x = 461,452,597.29/18,149.12
  6. Step 6: Final answer
    x = 25,425.62

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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.