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Finding the Fourth Proportional to 2,405.82, 3,608.87 and 674.44

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Solution

The fourth proportional to 2,405.82, 3,608.87 and 674.44 is: 1,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.82 : 3,608.87 = 674.44 : x
  2. Step 2: Convert to fraction form
    2,405.82/3,608.87 = 674.44/x
  3. Step 3: Cross multiply
    2,405.82x = 3,608.87 × 674.44
  4. Step 4: Simplify right side
    2,405.82x = 2,433,966.28
  5. Step 5: Solve for x
    x = 2,433,966.28/2,405.82
  6. Step 6: Final answer
    x = 1,011.70

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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.