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Finding the Fourth Proportional to 5,372.78, 7,414.21 and 3,014.90

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Solution

The fourth proportional to 5,372.78, 7,414.21 and 3,014.90 is: 4,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,372.78 : 7,414.21 = 3,014.90 : x
  2. Step 2: Convert to fraction form
    5,372.78/7,414.21 = 3,014.90/x
  3. Step 3: Cross multiply
    5,372.78x = 7,414.21 × 3,014.90
  4. Step 4: Simplify right side
    5,372.78x = 22,353,101.73
  5. Step 5: Solve for x
    x = 22,353,101.73/5,372.78
  6. Step 6: Final answer
    x = 4,160.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.