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Finding the Third Proportional to 399,680 and 866,680

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Solution

The third proportional to 399,680 and 866,680 is: 1,879,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,680 : 866,680 = 866,680 : x
  2. Step 2: Convert to fraction form
    399,680/866,680 = 866,680/x
  3. Step 3: Cross multiply
    399,680x = 866,680 × 866,680
  4. Step 4: Simplify right side
    399,680x = 751,134,222,400
  5. Step 5: Solve for x
    x = 751,134,222,400/399,680
  6. Step 6: Final answer
    x = 1,879,339.03

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.