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Finding the Fourth Proportional to 18,832.89, 28,214.91 and 8,819.27

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Solution

The fourth proportional to 18,832.89, 28,214.91 and 8,819.27 is: 13,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.89 : 28,214.91 = 8,819.27 : x
  2. Step 2: Convert to fraction form
    18,832.89/28,214.91 = 8,819.27/x
  3. Step 3: Cross multiply
    18,832.89x = 28,214.91 × 8,819.27
  4. Step 4: Simplify right side
    18,832.89x = 248,834,909.32
  5. Step 5: Solve for x
    x = 248,834,909.32/18,832.89
  6. Step 6: Final answer
    x = 13,212.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.