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Finding the Third Proportional to 196,553.25 and 421,152.75

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Solution

The third proportional to 196,553.25 and 421,152.75 is: 902,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,553.25 : 421,152.75 = 421,152.75 : x
  2. Step 2: Convert to fraction form
    196,553.25/421,152.75 = 421,152.75/x
  3. Step 3: Cross multiply
    196,553.25x = 421,152.75 × 421,152.75
  4. Step 4: Simplify right side
    196,553.25x = 177,369,638,832.56
  5. Step 5: Solve for x
    x = 177,369,638,832.56/196,553.25
  6. Step 6: Final answer
    x = 902,399.93

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.