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Finding the Fourth Proportional to 20,793.96, 28,695.48 and 11,362.44

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Solution

The fourth proportional to 20,793.96, 28,695.48 and 11,362.44 is: 15,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.96 : 28,695.48 = 11,362.44 : x
  2. Step 2: Convert to fraction form
    20,793.96/28,695.48 = 11,362.44/x
  3. Step 3: Cross multiply
    20,793.96x = 28,695.48 × 11,362.44
  4. Step 4: Simplify right side
    20,793.96x = 326,050,669.77
  5. Step 5: Solve for x
    x = 326,050,669.77/20,793.96
  6. Step 6: Final answer
    x = 15,680.07

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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.