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Finding the Third Proportional to 871,031 and 1,821,865

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Solution

The third proportional to 871,031 and 1,821,865 is: 3,810,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,031 : 1,821,865 = 1,821,865 : x
  2. Step 2: Convert to fraction form
    871,031/1,821,865 = 1,821,865/x
  3. Step 3: Cross multiply
    871,031x = 1,821,865 × 1,821,865
  4. Step 4: Simplify right side
    871,031x = 3,319,192,078,225
  5. Step 5: Solve for x
    x = 3,319,192,078,225/871,031
  6. Step 6: Final answer
    x = 3,810,647.47

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.