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Finding the Fourth Proportional to 2,695.92, 3,720.28 and 1,517.28

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Solution

The fourth proportional to 2,695.92, 3,720.28 and 1,517.28 is: 2,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.92 : 3,720.28 = 1,517.28 : x
  2. Step 2: Convert to fraction form
    2,695.92/3,720.28 = 1,517.28/x
  3. Step 3: Cross multiply
    2,695.92x = 3,720.28 × 1,517.28
  4. Step 4: Simplify right side
    2,695.92x = 5,644,706.44
  5. Step 5: Solve for x
    x = 5,644,706.44/2,695.92
  6. Step 6: Final answer
    x = 2,093.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.