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Finding the Fourth Proportional to 18,027.87, 24,878.97 and 9,962.05

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Solution

The fourth proportional to 18,027.87, 24,878.97 and 9,962.05 is: 13,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,027.87 : 24,878.97 = 9,962.05 : x
  2. Step 2: Convert to fraction form
    18,027.87/24,878.97 = 9,962.05/x
  3. Step 3: Cross multiply
    18,027.87x = 24,878.97 × 9,962.05
  4. Step 4: Simplify right side
    18,027.87x = 247,845,368.88
  5. Step 5: Solve for x
    x = 247,845,368.88/18,027.87
  6. Step 6: Final answer
    x = 13,747.90

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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.