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Finding the Third Proportional to 640,876 and 966,222

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Solution

The third proportional to 640,876 and 966,222 is: 1,456,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,876 : 966,222 = 966,222 : x
  2. Step 2: Convert to fraction form
    640,876/966,222 = 966,222/x
  3. Step 3: Cross multiply
    640,876x = 966,222 × 966,222
  4. Step 4: Simplify right side
    640,876x = 933,584,953,284
  5. Step 5: Solve for x
    x = 933,584,953,284/640,876
  6. Step 6: Final answer
    x = 1,456,732.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.