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Finding the Fourth Proportional to 15,067.90, 20,793.86 and 8,353.63

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Solution

The fourth proportional to 15,067.90, 20,793.86 and 8,353.63 is: 11,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.90 : 20,793.86 = 8,353.63 : x
  2. Step 2: Convert to fraction form
    15,067.90/20,793.86 = 8,353.63/x
  3. Step 3: Cross multiply
    15,067.90x = 20,793.86 × 8,353.63
  4. Step 4: Simplify right side
    15,067.90x = 173,704,212.71
  5. Step 5: Solve for x
    x = 173,704,212.71/15,067.90
  6. Step 6: Final answer
    x = 11,528.10

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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.