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Finding the Fourth Proportional to 18,472.19, 25,490.57 and 10,919.21

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Solution

The fourth proportional to 18,472.19, 25,490.57 and 10,919.21 is: 15,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.19 : 25,490.57 = 10,919.21 : x
  2. Step 2: Convert to fraction form
    18,472.19/25,490.57 = 10,919.21/x
  3. Step 3: Cross multiply
    18,472.19x = 25,490.57 × 10,919.21
  4. Step 4: Simplify right side
    18,472.19x = 278,336,895.98
  5. Step 5: Solve for x
    x = 278,336,895.98/18,472.19
  6. Step 6: Final answer
    x = 15,067.89

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