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Finding the Third Proportional to 197,775,888 and 290,948,107

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Solution

The third proportional to 197,775,888 and 290,948,107 is: 428,013,757.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,775,888 : 290,948,107 = 290,948,107 : x
  2. Step 2: Convert to fraction form
    197,775,888/290,948,107 = 290,948,107/x
  3. Step 3: Cross multiply
    197,775,888x = 290,948,107 × 290,948,107
  4. Step 4: Simplify right side
    197,775,888x = 84,650,800,966,883,456
  5. Step 5: Solve for x
    x = 84,650,800,966,883,456/197,775,888
  6. Step 6: Final answer
    x = 428,013,757.51

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.