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Finding the Fourth Proportional to 12,711.70, 19,067.10 and 3,351.57

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Solution

The fourth proportional to 12,711.70, 19,067.10 and 3,351.57 is: 5,027.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.70 : 19,067.10 = 3,351.57 : x
  2. Step 2: Convert to fraction form
    12,711.70/19,067.10 = 3,351.57/x
  3. Step 3: Cross multiply
    12,711.70x = 19,067.10 × 3,351.57
  4. Step 4: Simplify right side
    12,711.70x = 63,904,720.35
  5. Step 5: Solve for x
    x = 63,904,720.35/12,711.70
  6. Step 6: Final answer
    x = 5,027.24

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1.5x scale

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.