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Finding the Third Proportional to 9,992,781 and 21,783,276

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Solution

The third proportional to 9,992,781 and 21,783,276 is: 47,485,391.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992,781 : 21,783,276 = 21,783,276 : x
  2. Step 2: Convert to fraction form
    9,992,781/21,783,276 = 21,783,276/x
  3. Step 3: Cross multiply
    9,992,781x = 21,783,276 × 21,783,276
  4. Step 4: Simplify right side
    9,992,781x = 474,511,113,292,176
  5. Step 5: Solve for x
    x = 474,511,113,292,176/9,992,781
  6. Step 6: Final answer
    x = 47,485,391.03

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.