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Finding the Fourth Proportional to 121,606.84, 167,817.59 and 67,891.83

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Solution

The fourth proportional to 121,606.84, 167,817.59 and 67,891.83 is: 93,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,606.84 : 167,817.59 = 67,891.83 : x
  2. Step 2: Convert to fraction form
    121,606.84/167,817.59 = 67,891.83/x
  3. Step 3: Cross multiply
    121,606.84x = 167,817.59 × 67,891.83
  4. Step 4: Simplify right side
    121,606.84x = 11,393,443,291.29
  5. Step 5: Solve for x
    x = 11,393,443,291.29/121,606.84
  6. Step 6: Final answer
    x = 93,690.81

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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.