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Finding the Fourth Proportional to 18,027.62, 24,878.62 and 9,961.80

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Solution

The fourth proportional to 18,027.62, 24,878.62 and 9,961.80 is: 13,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,027.62 : 24,878.62 = 9,961.80 : x
  2. Step 2: Convert to fraction form
    18,027.62/24,878.62 = 9,961.80/x
  3. Step 3: Cross multiply
    18,027.62x = 24,878.62 × 9,961.80
  4. Step 4: Simplify right side
    18,027.62x = 247,835,836.72
  5. Step 5: Solve for x
    x = 247,835,836.72/18,027.62
  6. Step 6: Final answer
    x = 13,747.56

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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.