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Finding the Fourth Proportional to 18,791.78, 25,926.75 and 10,832.90

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Solution

The fourth proportional to 18,791.78, 25,926.75 and 10,832.90 is: 14,945.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.78 : 25,926.75 = 10,832.90 : x
  2. Step 2: Convert to fraction form
    18,791.78/25,926.75 = 10,832.90/x
  3. Step 3: Cross multiply
    18,791.78x = 25,926.75 × 10,832.90
  4. Step 4: Simplify right side
    18,791.78x = 280,861,760.44
  5. Step 5: Solve for x
    x = 280,861,760.44/18,791.78
  6. Step 6: Final answer
    x = 14,945.99

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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.