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Finding the Fourth Proportional to 2,582.57, 3,874.26 and 851.19

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Solution

The fourth proportional to 2,582.57, 3,874.26 and 851.19 is: 1,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,582.57 : 3,874.26 = 851.19 : x
  2. Step 2: Convert to fraction form
    2,582.57/3,874.26 = 851.19/x
  3. Step 3: Cross multiply
    2,582.57x = 3,874.26 × 851.19
  4. Step 4: Simplify right side
    2,582.57x = 3,297,731.37
  5. Step 5: Solve for x
    x = 3,297,731.37/2,582.57
  6. Step 6: Final answer
    x = 1,276.92

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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.