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Finding the Fourth Proportional to 19,863.67, 27,412.39 and 11,249.17

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Solution

The fourth proportional to 19,863.67, 27,412.39 and 11,249.17 is: 15,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.67 : 27,412.39 = 11,249.17 : x
  2. Step 2: Convert to fraction form
    19,863.67/27,412.39 = 11,249.17/x
  3. Step 3: Cross multiply
    19,863.67x = 27,412.39 × 11,249.17
  4. Step 4: Simplify right side
    19,863.67x = 308,366,635.22
  5. Step 5: Solve for x
    x = 308,366,635.22/19,863.67
  6. Step 6: Final answer
    x = 15,524.15

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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.