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Finding the Third Proportional to 196,134 and 423,372

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Solution

The third proportional to 196,134 and 423,372 is: 913,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,134 : 423,372 = 423,372 : x
  2. Step 2: Convert to fraction form
    196,134/423,372 = 423,372/x
  3. Step 3: Cross multiply
    196,134x = 423,372 × 423,372
  4. Step 4: Simplify right side
    196,134x = 179,243,850,384
  5. Step 5: Solve for x
    x = 179,243,850,384/196,134
  6. Step 6: Final answer
    x = 913,884.64

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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.