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Finding the Third Proportional to 836,640 and 1,256,868

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Solution

The third proportional to 836,640 and 1,256,868 is: 1,888,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,640 : 1,256,868 = 1,256,868 : x
  2. Step 2: Convert to fraction form
    836,640/1,256,868 = 1,256,868/x
  3. Step 3: Cross multiply
    836,640x = 1,256,868 × 1,256,868
  4. Step 4: Simplify right side
    836,640x = 1,579,717,169,424
  5. Step 5: Solve for x
    x = 1,579,717,169,424/836,640
  6. Step 6: Final answer
    x = 1,888,168.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.