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Finding the Third Proportional to 999,638 and 2,176,756

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Solution

The third proportional to 999,638 and 2,176,756 is: 4,739,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,638 : 2,176,756 = 2,176,756 : x
  2. Step 2: Convert to fraction form
    999,638/2,176,756 = 2,176,756/x
  3. Step 3: Cross multiply
    999,638x = 2,176,756 × 2,176,756
  4. Step 4: Simplify right side
    999,638x = 4,738,266,683,536
  5. Step 5: Solve for x
    x = 4,738,266,683,536/999,638
  6. Step 6: Final answer
    x = 4,739,982.56

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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.