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Finding the Fourth Proportional to 5,791.97, 7,992.85 and 3,139.33

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Solution

The fourth proportional to 5,791.97, 7,992.85 and 3,139.33 is: 4,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.97 : 7,992.85 = 3,139.33 : x
  2. Step 2: Convert to fraction form
    5,791.97/7,992.85 = 3,139.33/x
  3. Step 3: Cross multiply
    5,791.97x = 7,992.85 × 3,139.33
  4. Step 4: Simplify right side
    5,791.97x = 25,092,193.79
  5. Step 5: Solve for x
    x = 25,092,193.79/5,791.97
  6. Step 6: Final answer
    x = 4,332.24

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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.