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Finding the Fourth Proportional to 167,975,103, 231,805,645.38 and 90,712,767

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Solution

The fourth proportional to 167,975,103, 231,805,645.38 and 90,712,767 is: 125,183,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,975,103 : 231,805,645.38 = 90,712,767 : x
  2. Step 2: Convert to fraction form
    167,975,103/231,805,645.38 = 90,712,767/x
  3. Step 3: Cross multiply
    167,975,103x = 231,805,645.38 × 90,712,767
  4. Step 4: Simplify right side
    167,975,103x = 21,027,731,498,640,568
  5. Step 5: Solve for x
    x = 21,027,731,498,640,568/167,975,103
  6. Step 6: Final answer
    x = 125,183,620.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.