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Finding the Fourth Proportional to 17,791.26, 26,685.97 and 5,311.38

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Solution

The fourth proportional to 17,791.26, 26,685.97 and 5,311.38 is: 7,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,791.26 : 26,685.97 = 5,311.38 : x
  2. Step 2: Convert to fraction form
    17,791.26/26,685.97 = 5,311.38/x
  3. Step 3: Cross multiply
    17,791.26x = 26,685.97 × 5,311.38
  4. Step 4: Simplify right side
    17,791.26x = 141,739,404.05
  5. Step 5: Solve for x
    x = 141,739,404.05/17,791.26
  6. Step 6: Final answer
    x = 7,966.80

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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.