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Finding the Third Proportional to 817,380 and 1,781,891

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Solution

The third proportional to 817,380 and 1,781,891 is: 3,884,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,380 : 1,781,891 = 1,781,891 : x
  2. Step 2: Convert to fraction form
    817,380/1,781,891 = 1,781,891/x
  3. Step 3: Cross multiply
    817,380x = 1,781,891 × 1,781,891
  4. Step 4: Simplify right side
    817,380x = 3,175,135,535,881
  5. Step 5: Solve for x
    x = 3,175,135,535,881/817,380
  6. Step 6: Final answer
    x = 3,884,528.05

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.