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Finding the Fourth Proportional to 20,067.91, 27,692.50 and 11,114.88

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Solution

The fourth proportional to 20,067.91, 27,692.50 and 11,114.88 is: 15,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.91 : 27,692.50 = 11,114.88 : x
  2. Step 2: Convert to fraction form
    20,067.91/27,692.50 = 11,114.88/x
  3. Step 3: Cross multiply
    20,067.91x = 27,692.50 × 11,114.88
  4. Step 4: Simplify right side
    20,067.91x = 307,798,758.83
  5. Step 5: Solve for x
    x = 307,798,758.83/20,067.91
  6. Step 6: Final answer
    x = 15,337.86

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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.