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Finding the Third Proportional to 91,772 and 198,232

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Solution

The third proportional to 91,772 and 198,232 is: 428,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,772 : 198,232 = 198,232 : x
  2. Step 2: Convert to fraction form
    91,772/198,232 = 198,232/x
  3. Step 3: Cross multiply
    91,772x = 198,232 × 198,232
  4. Step 4: Simplify right side
    91,772x = 39,295,925,824
  5. Step 5: Solve for x
    x = 39,295,925,824/91,772
  6. Step 6: Final answer
    x = 428,190.80

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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.