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Finding the Fourth Proportional to 2,517.06, 3,775.26 and 668.31

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Solution

The fourth proportional to 2,517.06, 3,775.26 and 668.31 is: 1,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.06 : 3,775.26 = 668.31 : x
  2. Step 2: Convert to fraction form
    2,517.06/3,775.26 = 668.31/x
  3. Step 3: Cross multiply
    2,517.06x = 3,775.26 × 668.31
  4. Step 4: Simplify right side
    2,517.06x = 2,523,044.01
  5. Step 5: Solve for x
    x = 2,523,044.01/2,517.06
  6. Step 6: Final answer
    x = 1,002.38

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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.