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Finding the Fourth Proportional to 5,791.11, 8,686.67 and 1,408.54

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Solution

The fourth proportional to 5,791.11, 8,686.67 and 1,408.54 is: 2,112.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.11 : 8,686.67 = 1,408.54 : x
  2. Step 2: Convert to fraction form
    5,791.11/8,686.67 = 1,408.54/x
  3. Step 3: Cross multiply
    5,791.11x = 8,686.67 × 1,408.54
  4. Step 4: Simplify right side
    5,791.11x = 12,235,522.16
  5. Step 5: Solve for x
    x = 12,235,522.16/5,791.11
  6. Step 6: Final answer
    x = 2,112.81

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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.