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Finding the Fourth Proportional to 2,791.94, 4,188.11 and 943.25

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Solution

The fourth proportional to 2,791.94, 4,188.11 and 943.25 is: 1,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.94 : 4,188.11 = 943.25 : x
  2. Step 2: Convert to fraction form
    2,791.94/4,188.11 = 943.25/x
  3. Step 3: Cross multiply
    2,791.94x = 4,188.11 × 943.25
  4. Step 4: Simplify right side
    2,791.94x = 3,950,409.10
  5. Step 5: Solve for x
    x = 3,950,409.10/2,791.94
  6. Step 6: Final answer
    x = 1,414.94

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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.