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Finding the Fourth Proportional to 119,912.49, 165,479.48 and 66,197.58

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Solution

The fourth proportional to 119,912.49, 165,479.48 and 66,197.58 is: 91,352.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,912.49 : 165,479.48 = 66,197.58 : x
  2. Step 2: Convert to fraction form
    119,912.49/165,479.48 = 66,197.58/x
  3. Step 3: Cross multiply
    119,912.49x = 165,479.48 × 66,197.58
  4. Step 4: Simplify right side
    119,912.49x = 10,954,341,115.66
  5. Step 5: Solve for x
    x = 10,954,341,115.66/119,912.49
  6. Step 6: Final answer
    x = 91,352.79

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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.