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Finding the Third Proportional to 419,344 and 905,440

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Solution

The third proportional to 419,344 and 905,440 is: 1,955,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,344 : 905,440 = 905,440 : x
  2. Step 2: Convert to fraction form
    419,344/905,440 = 905,440/x
  3. Step 3: Cross multiply
    419,344x = 905,440 × 905,440
  4. Step 4: Simplify right side
    419,344x = 819,821,593,600
  5. Step 5: Solve for x
    x = 819,821,593,600/419,344
  6. Step 6: Final answer
    x = 1,955,009.71

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.