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Finding the Fourth Proportional to 5,791.90, 8,685.55 and 2,092.12

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Solution

The fourth proportional to 5,791.90, 8,685.55 and 2,092.12 is: 3,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.90 : 8,685.55 = 2,092.12 : x
  2. Step 2: Convert to fraction form
    5,791.90/8,685.55 = 2,092.12/x
  3. Step 3: Cross multiply
    5,791.90x = 8,685.55 × 2,092.12
  4. Step 4: Simplify right side
    5,791.90x = 18,171,158.98
  5. Step 5: Solve for x
    x = 18,171,158.98/5,791.90
  6. Step 6: Final answer
    x = 3,137.34

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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.