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Finding the Fourth Proportional to 18,863.24, 26,016.24 and 12,149.42

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Solution

The fourth proportional to 18,863.24, 26,016.24 and 12,149.42 is: 16,756.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.24 : 26,016.24 = 12,149.42 : x
  2. Step 2: Convert to fraction form
    18,863.24/26,016.24 = 12,149.42/x
  3. Step 3: Cross multiply
    18,863.24x = 26,016.24 × 12,149.42
  4. Step 4: Simplify right side
    18,863.24x = 316,082,226.58
  5. Step 5: Solve for x
    x = 316,082,226.58/18,863.24
  6. Step 6: Final answer
    x = 16,756.52

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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.