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Finding the Third Proportional to 1,939,488 and 4,115,388

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Solution

The third proportional to 1,939,488 and 4,115,388 is: 8,732,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939,488 : 4,115,388 = 4,115,388 : x
  2. Step 2: Convert to fraction form
    1,939,488/4,115,388 = 4,115,388/x
  3. Step 3: Cross multiply
    1,939,488x = 4,115,388 × 4,115,388
  4. Step 4: Simplify right side
    1,939,488x = 16,936,418,390,544
  5. Step 5: Solve for x
    x = 16,936,418,390,544/1,939,488
  6. Step 6: Final answer
    x = 8,732,417.21

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.