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Finding the Third Proportional to 191,720,726 and 419,313,660

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Solution

The third proportional to 191,720,726 and 419,313,660 is: 917,083,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,720,726 : 419,313,660 = 419,313,660 : x
  2. Step 2: Convert to fraction form
    191,720,726/419,313,660 = 419,313,660/x
  3. Step 3: Cross multiply
    191,720,726x = 419,313,660 × 419,313,660
  4. Step 4: Simplify right side
    191,720,726x = 175,823,945,462,595,584
  5. Step 5: Solve for x
    x = 175,823,945,462,595,584/191,720,726
  6. Step 6: Final answer
    x = 917,083,661.90

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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.