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Finding the Fourth Proportional to 163,206,872.80, 244,810,309.20 and 126,218,579.20

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Solution

The fourth proportional to 163,206,872.80, 244,810,309.20 and 126,218,579.20 is: 189,327,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,206,872.80 : 244,810,309.20 = 126,218,579.20 : x
  2. Step 2: Convert to fraction form
    163,206,872.80/244,810,309.20 = 126,218,579.20/x
  3. Step 3: Cross multiply
    163,206,872.80x = 244,810,309.20 × 126,218,579.20
  4. Step 4: Simplify right side
    163,206,872.80x = 30,899,609,400,736,688
  5. Step 5: Solve for x
    x = 30,899,609,400,736,688/163,206,872.80
  6. Step 6: Final answer
    x = 189,327,868.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.