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Finding the Fourth Proportional to 2,695.54, 4,043.60 and 747.75

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Solution

The fourth proportional to 2,695.54, 4,043.60 and 747.75 is: 1,121.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.54 : 4,043.60 = 747.75 : x
  2. Step 2: Convert to fraction form
    2,695.54/4,043.60 = 747.75/x
  3. Step 3: Cross multiply
    2,695.54x = 4,043.60 × 747.75
  4. Step 4: Simplify right side
    2,695.54x = 3,023,601.90
  5. Step 5: Solve for x
    x = 3,023,601.90/2,695.54
  6. Step 6: Final answer
    x = 1,121.71

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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.