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Finding the Third Proportional to 191,354 and 418,994

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Solution

The third proportional to 191,354 and 418,994 is: 917,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,354 : 418,994 = 418,994 : x
  2. Step 2: Convert to fraction form
    191,354/418,994 = 418,994/x
  3. Step 3: Cross multiply
    191,354x = 418,994 × 418,994
  4. Step 4: Simplify right side
    191,354x = 175,555,972,036
  5. Step 5: Solve for x
    x = 175,555,972,036/191,354
  6. Step 6: Final answer
    x = 917,440.83

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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.