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Finding the Fourth Proportional to 18,691.70, 25,794.22 and 10,193.89

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Solution

The fourth proportional to 18,691.70, 25,794.22 and 10,193.89 is: 14,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.70 : 25,794.22 = 10,193.89 : x
  2. Step 2: Convert to fraction form
    18,691.70/25,794.22 = 10,193.89/x
  3. Step 3: Cross multiply
    18,691.70x = 25,794.22 × 10,193.89
  4. Step 4: Simplify right side
    18,691.70x = 262,943,441.32
  5. Step 5: Solve for x
    x = 262,943,441.32/18,691.70
  6. Step 6: Final answer
    x = 14,067.39

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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.