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Finding the Fourth Proportional to 172,960.83, 259,329.43 and 67,790.43

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Solution

The fourth proportional to 172,960.83, 259,329.43 and 67,790.43 is: 101,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,960.83 : 259,329.43 = 67,790.43 : x
  2. Step 2: Convert to fraction form
    172,960.83/259,329.43 = 67,790.43/x
  3. Step 3: Cross multiply
    172,960.83x = 259,329.43 × 67,790.43
  4. Step 4: Simplify right side
    172,960.83x = 17,580,053,571.35
  5. Step 5: Solve for x
    x = 17,580,053,571.35/172,960.83
  6. Step 6: Final answer
    x = 101,641.82

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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.