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Finding the Third Proportional to 21,455,031 and 46,991,418

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Solution

The third proportional to 21,455,031 and 46,991,418 is: 102,921,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455,031 : 46,991,418 = 46,991,418 : x
  2. Step 2: Convert to fraction form
    21,455,031/46,991,418 = 46,991,418/x
  3. Step 3: Cross multiply
    21,455,031x = 46,991,418 × 46,991,418
  4. Step 4: Simplify right side
    21,455,031x = 2,208,193,365,650,724
  5. Step 5: Solve for x
    x = 2,208,193,365,650,724/21,455,031
  6. Step 6: Final answer
    x = 102,921,937.78

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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.