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Finding the Fourth Proportional to 4,799.70, 7,198.11 and 2,489.94

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Solution

The fourth proportional to 4,799.70, 7,198.11 and 2,489.94 is: 3,734.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,799.70 : 7,198.11 = 2,489.94 : x
  2. Step 2: Convert to fraction form
    4,799.70/7,198.11 = 2,489.94/x
  3. Step 3: Cross multiply
    4,799.70x = 7,198.11 × 2,489.94
  4. Step 4: Simplify right side
    4,799.70x = 17,922,862.01
  5. Step 5: Solve for x
    x = 17,922,862.01/4,799.70
  6. Step 6: Final answer
    x = 3,734.16

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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.