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Finding the Fourth Proportional to 15,067.72, 20,793.62 and 8,353.46

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Solution

The fourth proportional to 15,067.72, 20,793.62 and 8,353.46 is: 11,527.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.72 : 20,793.62 = 8,353.46 : x
  2. Step 2: Convert to fraction form
    15,067.72/20,793.62 = 8,353.46/x
  3. Step 3: Cross multiply
    15,067.72x = 20,793.62 × 8,353.46
  4. Step 4: Simplify right side
    15,067.72x = 173,698,672.93
  5. Step 5: Solve for x
    x = 173,698,672.93/15,067.72
  6. Step 6: Final answer
    x = 11,527.87

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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.