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Finding the Fourth Proportional to 118,895.92, 164,049.42 and 80,660.68

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Solution

The fourth proportional to 118,895.92, 164,049.42 and 80,660.68 is: 111,293.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,895.92 : 164,049.42 = 80,660.68 : x
  2. Step 2: Convert to fraction form
    118,895.92/164,049.42 = 80,660.68/x
  3. Step 3: Cross multiply
    118,895.92x = 164,049.42 × 80,660.68
  4. Step 4: Simplify right side
    118,895.92x = 13,232,337,770.81
  5. Step 5: Solve for x
    x = 13,232,337,770.81/118,895.92
  6. Step 6: Final answer
    x = 111,293.46

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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.