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Finding the Fourth Proportional to 118,936.79, 178,469.78 and 69,052.74

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Solution

The fourth proportional to 118,936.79, 178,469.78 and 69,052.74 is: 103,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,936.79 : 178,469.78 = 69,052.74 : x
  2. Step 2: Convert to fraction form
    118,936.79/178,469.78 = 69,052.74/x
  3. Step 3: Cross multiply
    118,936.79x = 178,469.78 × 69,052.74
  4. Step 4: Simplify right side
    118,936.79x = 12,323,826,970.93
  5. Step 5: Solve for x
    x = 12,323,826,970.93/118,936.79
  6. Step 6: Final answer
    x = 103,616.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.