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Finding the Fourth Proportional to 120,959.98, 166,930.67 and 67,243.81

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Solution

The fourth proportional to 120,959.98, 166,930.67 and 67,243.81 is: 92,799.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,959.98 : 166,930.67 = 67,243.81 : x
  2. Step 2: Convert to fraction form
    120,959.98/166,930.67 = 67,243.81/x
  3. Step 3: Cross multiply
    120,959.98x = 166,930.67 × 67,243.81
  4. Step 4: Simplify right side
    120,959.98x = 11,225,054,256.65
  5. Step 5: Solve for x
    x = 11,225,054,256.65/120,959.98
  6. Step 6: Final answer
    x = 92,799.74

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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.