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Finding the Fourth Proportional to 2,695.90, 3,720.27 and 1,516.90

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Solution

The fourth proportional to 2,695.90, 3,720.27 and 1,516.90 is: 2,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.90 : 3,720.27 = 1,516.90 : x
  2. Step 2: Convert to fraction form
    2,695.90/3,720.27 = 1,516.90/x
  3. Step 3: Cross multiply
    2,695.90x = 3,720.27 × 1,516.90
  4. Step 4: Simplify right side
    2,695.90x = 5,643,277.56
  5. Step 5: Solve for x
    x = 5,643,277.56/2,695.90
  6. Step 6: Final answer
    x = 2,093.28

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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.