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Finding the Third Proportional to 529,661 and 810,387

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Solution

The third proportional to 529,661 and 810,387 is: 1,239,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,661 : 810,387 = 810,387 : x
  2. Step 2: Convert to fraction form
    529,661/810,387 = 810,387/x
  3. Step 3: Cross multiply
    529,661x = 810,387 × 810,387
  4. Step 4: Simplify right side
    529,661x = 656,727,089,769
  5. Step 5: Solve for x
    x = 656,727,089,769/529,661
  6. Step 6: Final answer
    x = 1,239,900.79

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.