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Finding the Third Proportional to 28,372 and 43,326

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Solution

The third proportional to 28,372 and 43,326 is: 66,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372 : 43,326 = 43,326 : x
  2. Step 2: Convert to fraction form
    28,372/43,326 = 43,326/x
  3. Step 3: Cross multiply
    28,372x = 43,326 × 43,326
  4. Step 4: Simplify right side
    28,372x = 1,877,142,276
  5. Step 5: Solve for x
    x = 1,877,142,276/28,372
  6. Step 6: Final answer
    x = 66,161.79

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.