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Finding the Third Proportional to 331,318 and 441,423

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Solution

The third proportional to 331,318 and 441,423 is: 588,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,318 : 441,423 = 441,423 : x
  2. Step 2: Convert to fraction form
    331,318/441,423 = 441,423/x
  3. Step 3: Cross multiply
    331,318x = 441,423 × 441,423
  4. Step 4: Simplify right side
    331,318x = 194,854,264,929
  5. Step 5: Solve for x
    x = 194,854,264,929/331,318
  6. Step 6: Final answer
    x = 588,118.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.