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Finding the Fourth Proportional to 2,331.97, 3,498.57 and 851.33

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Solution

The fourth proportional to 2,331.97, 3,498.57 and 851.33 is: 1,277.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.97 : 3,498.57 = 851.33 : x
  2. Step 2: Convert to fraction form
    2,331.97/3,498.57 = 851.33/x
  3. Step 3: Cross multiply
    2,331.97x = 3,498.57 × 851.33
  4. Step 4: Simplify right side
    2,331.97x = 2,978,420.11
  5. Step 5: Solve for x
    x = 2,978,420.11/2,331.97
  6. Step 6: Final answer
    x = 1,277.21

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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.