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Finding the Third Proportional to 90,546,131 and 196,404,390

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Solution

The third proportional to 90,546,131 and 196,404,390 is: 426,022,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,546,131 : 196,404,390 = 196,404,390 : x
  2. Step 2: Convert to fraction form
    90,546,131/196,404,390 = 196,404,390/x
  3. Step 3: Cross multiply
    90,546,131x = 196,404,390 × 196,404,390
  4. Step 4: Simplify right side
    90,546,131x = 38,574,684,411,272,096
  5. Step 5: Solve for x
    x = 38,574,684,411,272,096/90,546,131
  6. Step 6: Final answer
    x = 426,022,448.28

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.