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Finding the Fourth Proportional to 4,959.77, 7,418.12 and 2,874.69

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Solution

The fourth proportional to 4,959.77, 7,418.12 and 2,874.69 is: 4,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,959.77 : 7,418.12 = 2,874.69 : x
  2. Step 2: Convert to fraction form
    4,959.77/7,418.12 = 2,874.69/x
  3. Step 3: Cross multiply
    4,959.77x = 7,418.12 × 2,874.69
  4. Step 4: Simplify right side
    4,959.77x = 21,324,781.01
  5. Step 5: Solve for x
    x = 21,324,781.01/4,959.77
  6. Step 6: Final answer
    x = 4,299.55

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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.