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Finding the Third Proportional to 1,916,521.50 and 4,221,918

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Solution

The third proportional to 1,916,521.50 and 4,221,918 is: 9,300,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,521.50 : 4,221,918 = 4,221,918 : x
  2. Step 2: Convert to fraction form
    1,916,521.50/4,221,918 = 4,221,918/x
  3. Step 3: Cross multiply
    1,916,521.50x = 4,221,918 × 4,221,918
  4. Step 4: Simplify right side
    1,916,521.50x = 17,824,591,598,724
  5. Step 5: Solve for x
    x = 17,824,591,598,724/1,916,521.50
  6. Step 6: Final answer
    x = 9,300,491.33

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.