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Finding the Fourth Proportional to 123,811.59, 170,859.36 and 67,222.98

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Solution

The fourth proportional to 123,811.59, 170,859.36 and 67,222.98 is: 92,767.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.59 : 170,859.36 = 67,222.98 : x
  2. Step 2: Convert to fraction form
    123,811.59/170,859.36 = 67,222.98/x
  3. Step 3: Cross multiply
    123,811.59x = 170,859.36 × 67,222.98
  4. Step 4: Simplify right side
    123,811.59x = 11,485,675,340.09
  5. Step 5: Solve for x
    x = 11,485,675,340.09/123,811.59
  6. Step 6: Final answer
    x = 92,767.37

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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.