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Finding the Third Proportional to 11,772 and 19,326

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Solution

The third proportional to 11,772 and 19,326 is: 31,727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772 : 19,326 = 19,326 : x
  2. Step 2: Convert to fraction form
    11,772/19,326 = 19,326/x
  3. Step 3: Cross multiply
    11,772x = 19,326 × 19,326
  4. Step 4: Simplify right side
    11,772x = 373,494,276
  5. Step 5: Solve for x
    x = 373,494,276/11,772
  6. Step 6: Final answer
    x = 31,727.34

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.