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Finding the Fourth Proportional to 2,695.78, 3,720.18 and 1,517.23

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Solution

The fourth proportional to 2,695.78, 3,720.18 and 1,517.23 is: 2,093.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.78 : 3,720.18 = 1,517.23 : x
  2. Step 2: Convert to fraction form
    2,695.78/3,720.18 = 1,517.23/x
  3. Step 3: Cross multiply
    2,695.78x = 3,720.18 × 1,517.23
  4. Step 4: Simplify right side
    2,695.78x = 5,644,370.51
  5. Step 5: Solve for x
    x = 5,644,370.51/2,695.78
  6. Step 6: Final answer
    x = 2,093.78

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