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Finding the Third Proportional to 18,991,952,840 and 40,440,225,976

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Solution

The third proportional to 18,991,952,840 and 40,440,225,976 is: 86,110,780,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991,952,840 : 40,440,225,976 = 40,440,225,976 : x
  2. Step 2: Convert to fraction form
    18,991,952,840/40,440,225,976 = 40,440,225,976/x
  3. Step 3: Cross multiply
    18,991,952,840x = 40,440,225,976 × 40,440,225,976
  4. Step 4: Simplify right side
    18,991,952,840x = 1,635,411,876,989,945,249,792
  5. Step 5: Solve for x
    x = 1,635,411,876,989,945,249,792/18,991,952,840
  6. Step 6: Final answer
    x = 86,110,780,221.90

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.