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Finding the Fourth Proportional to 1,144.26, 1,716.90 and 682.95

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Solution

The fourth proportional to 1,144.26, 1,716.90 and 682.95 is: 1,024.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.26 : 1,716.90 = 682.95 : x
  2. Step 2: Convert to fraction form
    1,144.26/1,716.90 = 682.95/x
  3. Step 3: Cross multiply
    1,144.26x = 1,716.90 × 682.95
  4. Step 4: Simplify right side
    1,144.26x = 1,172,556.86
  5. Step 5: Solve for x
    x = 1,172,556.86/1,144.26
  6. Step 6: Final answer
    x = 1,024.73

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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.