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Finding the Third Proportional to 13,668.75 and 21,072.38

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Solution

The third proportional to 13,668.75 and 21,072.38 is: 32,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.75 : 21,072.38 = 21,072.38 : x
  2. Step 2: Convert to fraction form
    13,668.75/21,072.38 = 21,072.38/x
  3. Step 3: Cross multiply
    13,668.75x = 21,072.38 × 21,072.38
  4. Step 4: Simplify right side
    13,668.75x = 444,044,988.14
  5. Step 5: Solve for x
    x = 444,044,988.14/13,668.75
  6. Step 6: Final answer
    x = 32,486.14

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.