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Finding the Third Proportional to 196,806 and 431,439

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Solution

The third proportional to 196,806 and 431,439 is: 945,802.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,806 : 431,439 = 431,439 : x
  2. Step 2: Convert to fraction form
    196,806/431,439 = 431,439/x
  3. Step 3: Cross multiply
    196,806x = 431,439 × 431,439
  4. Step 4: Simplify right side
    196,806x = 186,139,610,721
  5. Step 5: Solve for x
    x = 186,139,610,721/196,806
  6. Step 6: Final answer
    x = 945,802.52

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.