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Finding the Fourth Proportional to 18,834.76, 25,992.10 and 10,451.24

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Solution

The fourth proportional to 18,834.76, 25,992.10 and 10,451.24 is: 14,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.76 : 25,992.10 = 10,451.24 : x
  2. Step 2: Convert to fraction form
    18,834.76/25,992.10 = 10,451.24/x
  3. Step 3: Cross multiply
    18,834.76x = 25,992.10 × 10,451.24
  4. Step 4: Simplify right side
    18,834.76x = 271,649,675.20
  5. Step 5: Solve for x
    x = 271,649,675.20/18,834.76
  6. Step 6: Final answer
    x = 14,422.78

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Double scale
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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.