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Finding the Fourth Proportional to 19,993.11, 29,926.77 and 13,716.42

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Solution

The fourth proportional to 19,993.11, 29,926.77 and 13,716.42 is: 20,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.11 : 29,926.77 = 13,716.42 : x
  2. Step 2: Convert to fraction form
    19,993.11/29,926.77 = 13,716.42/x
  3. Step 3: Cross multiply
    19,993.11x = 29,926.77 × 13,716.42
  4. Step 4: Simplify right side
    19,993.11x = 410,488,146.56
  5. Step 5: Solve for x
    x = 410,488,146.56/19,993.11
  6. Step 6: Final answer
    x = 20,531.48

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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.