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Finding the Fourth Proportional to 12,212.27, 18,208.67 and 11,169.67

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Solution

The fourth proportional to 12,212.27, 18,208.67 and 11,169.67 is: 16,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.27 : 18,208.67 = 11,169.67 : x
  2. Step 2: Convert to fraction form
    12,212.27/18,208.67 = 11,169.67/x
  3. Step 3: Cross multiply
    12,212.27x = 18,208.67 × 11,169.67
  4. Step 4: Simplify right side
    12,212.27x = 203,384,835.04
  5. Step 5: Solve for x
    x = 203,384,835.04/12,212.27
  6. Step 6: Final answer
    x = 16,654.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.