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Finding the Third Proportional to 196,872 and 429,831

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Solution

The third proportional to 196,872 and 429,831 is: 938,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,872 : 429,831 = 429,831 : x
  2. Step 2: Convert to fraction form
    196,872/429,831 = 429,831/x
  3. Step 3: Cross multiply
    196,872x = 429,831 × 429,831
  4. Step 4: Simplify right side
    196,872x = 184,754,688,561
  5. Step 5: Solve for x
    x = 184,754,688,561/196,872
  6. Step 6: Final answer
    x = 938,450.81

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.