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Finding the Fourth Proportional to 3,813.76, 5,722.42 and 1,350.44

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Solution

The fourth proportional to 3,813.76, 5,722.42 and 1,350.44 is: 2,026.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.76 : 5,722.42 = 1,350.44 : x
  2. Step 2: Convert to fraction form
    3,813.76/5,722.42 = 1,350.44/x
  3. Step 3: Cross multiply
    3,813.76x = 5,722.42 × 1,350.44
  4. Step 4: Simplify right side
    3,813.76x = 7,727,784.86
  5. Step 5: Solve for x
    x = 7,727,784.86/3,813.76
  6. Step 6: Final answer
    x = 2,026.29

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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.