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Finding the Fourth Proportional to 12,169.20, 16,793.49 and 6,580.20

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Solution

The fourth proportional to 12,169.20, 16,793.49 and 6,580.20 is: 9,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.20 : 16,793.49 = 6,580.20 : x
  2. Step 2: Convert to fraction form
    12,169.20/16,793.49 = 6,580.20/x
  3. Step 3: Cross multiply
    12,169.20x = 16,793.49 × 6,580.20
  4. Step 4: Simplify right side
    12,169.20x = 110,504,441.09
  5. Step 5: Solve for x
    x = 110,504,441.09/12,169.20
  6. Step 6: Final answer
    x = 9,080.67

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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.