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Finding the Third Proportional to 455,556 and 996,911

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Solution

The third proportional to 455,556 and 996,911 is: 2,181,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,556 : 996,911 = 996,911 : x
  2. Step 2: Convert to fraction form
    455,556/996,911 = 996,911/x
  3. Step 3: Cross multiply
    455,556x = 996,911 × 996,911
  4. Step 4: Simplify right side
    455,556x = 993,831,541,921
  5. Step 5: Solve for x
    x = 993,831,541,921/455,556
  6. Step 6: Final answer
    x = 2,181,579.31

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.