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Finding the Fourth Proportional to 18,414.76, 25,422 and 14,372.92

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Solution

The fourth proportional to 18,414.76, 25,422 and 14,372.92 is: 19,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.76 : 25,422 = 14,372.92 : x
  2. Step 2: Convert to fraction form
    18,414.76/25,422 = 14,372.92/x
  3. Step 3: Cross multiply
    18,414.76x = 25,422 × 14,372.92
  4. Step 4: Simplify right side
    18,414.76x = 365,388,372.24
  5. Step 5: Solve for x
    x = 365,388,372.24/18,414.76
  6. Step 6: Final answer
    x = 19,842.15

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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.