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Finding the Third Proportional to 412,929 and 581,505

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Solution

The third proportional to 412,929 and 581,505 is: 818,901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,929 : 581,505 = 581,505 : x
  2. Step 2: Convert to fraction form
    412,929/581,505 = 581,505/x
  3. Step 3: Cross multiply
    412,929x = 581,505 × 581,505
  4. Step 4: Simplify right side
    412,929x = 338,148,065,025
  5. Step 5: Solve for x
    x = 338,148,065,025/412,929
  6. Step 6: Final answer
    x = 818,901.23

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.