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Finding the Third Proportional to 996,434 and 2,179,900

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Solution

The third proportional to 996,434 and 2,179,900 is: 4,768,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,434 : 2,179,900 = 2,179,900 : x
  2. Step 2: Convert to fraction form
    996,434/2,179,900 = 2,179,900/x
  3. Step 3: Cross multiply
    996,434x = 2,179,900 × 2,179,900
  4. Step 4: Simplify right side
    996,434x = 4,751,964,010,000
  5. Step 5: Solve for x
    x = 4,751,964,010,000/996,434
  6. Step 6: Final answer
    x = 4,768,970.16

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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.