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Finding the Fourth Proportional to 172,351.17, 258,524.82 and 67,243.95

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Solution

The fourth proportional to 172,351.17, 258,524.82 and 67,243.95 is: 100,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,351.17 : 258,524.82 = 67,243.95 : x
  2. Step 2: Convert to fraction form
    172,351.17/258,524.82 = 67,243.95/x
  3. Step 3: Cross multiply
    172,351.17x = 258,524.82 × 67,243.95
  4. Step 4: Simplify right side
    172,351.17x = 17,384,230,069.84
  5. Step 5: Solve for x
    x = 17,384,230,069.84/172,351.17
  6. Step 6: Final answer
    x = 100,865.17

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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.