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Finding the Fourth Proportional to 118,945.44, 164,132.88 and 68,660.64

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Solution

The fourth proportional to 118,945.44, 164,132.88 and 68,660.64 is: 94,744.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,945.44 : 164,132.88 = 68,660.64 : x
  2. Step 2: Convert to fraction form
    118,945.44/164,132.88 = 68,660.64/x
  3. Step 3: Cross multiply
    118,945.44x = 164,132.88 × 68,660.64
  4. Step 4: Simplify right side
    118,945.44x = 11,269,468,585.84
  5. Step 5: Solve for x
    x = 11,269,468,585.84/118,945.44
  6. Step 6: Final answer
    x = 94,744.86

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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.