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Finding the Fourth Proportional to 2,169.24, 3,252.54 and 851.41

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Solution

The fourth proportional to 2,169.24, 3,252.54 and 851.41 is: 1,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.24 : 3,252.54 = 851.41 : x
  2. Step 2: Convert to fraction form
    2,169.24/3,252.54 = 851.41/x
  3. Step 3: Cross multiply
    2,169.24x = 3,252.54 × 851.41
  4. Step 4: Simplify right side
    2,169.24x = 2,769,245.08
  5. Step 5: Solve for x
    x = 2,769,245.08/2,169.24
  6. Step 6: Final answer
    x = 1,276.60

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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.