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Finding the Third Proportional to 781,322 and 1,658,568

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Solution

The third proportional to 781,322 and 1,658,568 is: 3,520,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,322 : 1,658,568 = 1,658,568 : x
  2. Step 2: Convert to fraction form
    781,322/1,658,568 = 1,658,568/x
  3. Step 3: Cross multiply
    781,322x = 1,658,568 × 1,658,568
  4. Step 4: Simplify right side
    781,322x = 2,750,847,810,624
  5. Step 5: Solve for x
    x = 2,750,847,810,624/781,322
  6. Step 6: Final answer
    x = 3,520,760.72

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.