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Finding the Third Proportional to 8,209.79 and 13,168.99

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Solution

The third proportional to 8,209.79 and 13,168.99 is: 21,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.79 : 13,168.99 = 13,168.99 : x
  2. Step 2: Convert to fraction form
    8,209.79/13,168.99 = 13,168.99/x
  3. Step 3: Cross multiply
    8,209.79x = 13,168.99 × 13,168.99
  4. Step 4: Simplify right side
    8,209.79x = 173,422,200.91
  5. Step 5: Solve for x
    x = 173,422,200.91/8,209.79
  6. Step 6: Final answer
    x = 21,123.82

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These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.