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Finding the Fourth Proportional to 18,249.35, 25,184.07 and 9,865.85

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Solution

The fourth proportional to 18,249.35, 25,184.07 and 9,865.85 is: 13,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.35 : 25,184.07 = 9,865.85 : x
  2. Step 2: Convert to fraction form
    18,249.35/25,184.07 = 9,865.85/x
  3. Step 3: Cross multiply
    18,249.35x = 25,184.07 × 9,865.85
  4. Step 4: Simplify right side
    18,249.35x = 248,462,131.09
  5. Step 5: Solve for x
    x = 248,462,131.09/18,249.35
  6. Step 6: Final answer
    x = 13,614.85

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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.