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Finding the Third Proportional to 1,916,532 and 4,221,939

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Solution

The third proportional to 1,916,532 and 4,221,939 is: 9,300,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,532 : 4,221,939 = 4,221,939 : x
  2. Step 2: Convert to fraction form
    1,916,532/4,221,939 = 4,221,939/x
  3. Step 3: Cross multiply
    1,916,532x = 4,221,939 × 4,221,939
  4. Step 4: Simplify right side
    1,916,532x = 17,824,768,919,721
  5. Step 5: Solve for x
    x = 17,824,768,919,721/1,916,532
  6. Step 6: Final answer
    x = 9,300,532.90

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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.