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Finding the Fourth Proportional to 20,794.73, 28,695.87 and 11,363.09

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Solution

The fourth proportional to 20,794.73, 28,695.87 and 11,363.09 is: 15,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.73 : 28,695.87 = 11,363.09 : x
  2. Step 2: Convert to fraction form
    20,794.73/28,695.87 = 11,363.09/x
  3. Step 3: Cross multiply
    20,794.73x = 28,695.87 × 11,363.09
  4. Step 4: Simplify right side
    20,794.73x = 326,073,609.96
  5. Step 5: Solve for x
    x = 326,073,609.96/20,794.73
  6. Step 6: Final answer
    x = 15,680.59

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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.