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Finding the Fourth Proportional to 122,705.84, 169,329.69 and 68,993.93

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Solution

The fourth proportional to 122,705.84, 169,329.69 and 68,993.93 is: 95,209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,705.84 : 169,329.69 = 68,993.93 : x
  2. Step 2: Convert to fraction form
    122,705.84/169,329.69 = 68,993.93/x
  3. Step 3: Cross multiply
    122,705.84x = 169,329.69 × 68,993.93
  4. Step 4: Simplify right side
    122,705.84x = 11,682,720,778.78
  5. Step 5: Solve for x
    x = 11,682,720,778.78/122,705.84
  6. Step 6: Final answer
    x = 95,209.17

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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.