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Finding the Third Proportional to 194,790 and 405,168

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Solution

The third proportional to 194,790 and 405,168 is: 842,759.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,790 : 405,168 = 405,168 : x
  2. Step 2: Convert to fraction form
    194,790/405,168 = 405,168/x
  3. Step 3: Cross multiply
    194,790x = 405,168 × 405,168
  4. Step 4: Simplify right side
    194,790x = 164,161,108,224
  5. Step 5: Solve for x
    x = 164,161,108,224/194,790
  6. Step 6: Final answer
    x = 842,759.42

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.