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Finding the Fourth Proportional to 2,711.95, 4,065.19 and 1,067.85

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Solution

The fourth proportional to 2,711.95, 4,065.19 and 1,067.85 is: 1,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.95 : 4,065.19 = 1,067.85 : x
  2. Step 2: Convert to fraction form
    2,711.95/4,065.19 = 1,067.85/x
  3. Step 3: Cross multiply
    2,711.95x = 4,065.19 × 1,067.85
  4. Step 4: Simplify right side
    2,711.95x = 4,341,010.47
  5. Step 5: Solve for x
    x = 4,341,010.47/2,711.95
  6. Step 6: Final answer
    x = 1,600.70

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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.