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Finding the Fourth Proportional to 121,660.56, 167,886.81 and 67,944.60

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Solution

The fourth proportional to 121,660.56, 167,886.81 and 67,944.60 is: 93,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,660.56 : 167,886.81 = 67,944.60 : x
  2. Step 2: Convert to fraction form
    121,660.56/167,886.81 = 67,944.60/x
  3. Step 3: Cross multiply
    121,660.56x = 167,886.81 × 67,944.60
  4. Step 4: Simplify right side
    121,660.56x = 11,407,002,150.73
  5. Step 5: Solve for x
    x = 11,407,002,150.73/121,660.56
  6. Step 6: Final answer
    x = 93,760.89

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1.5x scale

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.