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Finding the Third Proportional to 74,728.50 and 161,668.50

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Solution

The third proportional to 74,728.50 and 161,668.50 is: 349,755.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,728.50 : 161,668.50 = 161,668.50 : x
  2. Step 2: Convert to fraction form
    74,728.50/161,668.50 = 161,668.50/x
  3. Step 3: Cross multiply
    74,728.50x = 161,668.50 × 161,668.50
  4. Step 4: Simplify right side
    74,728.50x = 26,136,703,892.25
  5. Step 5: Solve for x
    x = 26,136,703,892.25/74,728.50
  6. Step 6: Final answer
    x = 349,755.50

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.