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Finding the Fourth Proportional to 7,791.23, 11,691.53 and 2,793.22

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Solution

The fourth proportional to 7,791.23, 11,691.53 and 2,793.22 is: 4,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.23 : 11,691.53 = 2,793.22 : x
  2. Step 2: Convert to fraction form
    7,791.23/11,691.53 = 2,793.22/x
  3. Step 3: Cross multiply
    7,791.23x = 11,691.53 × 2,793.22
  4. Step 4: Simplify right side
    7,791.23x = 32,656,993.18
  5. Step 5: Solve for x
    x = 32,656,993.18/7,791.23
  6. Step 6: Final answer
    x = 4,191.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.