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Finding the Third Proportional to 14,091 and 20,728

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Solution

The third proportional to 14,091 and 20,728 is: 30,491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091 : 20,728 = 20,728 : x
  2. Step 2: Convert to fraction form
    14,091/20,728 = 20,728/x
  3. Step 3: Cross multiply
    14,091x = 20,728 × 20,728
  4. Step 4: Simplify right side
    14,091x = 429,649,984
  5. Step 5: Solve for x
    x = 429,649,984/14,091
  6. Step 6: Final answer
    x = 30,491.09

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.