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Finding the Fourth Proportional to 118,951.56, 178,370.84 and 69,046.97

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Solution

The fourth proportional to 118,951.56, 178,370.84 and 69,046.97 is: 103,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,951.56 : 178,370.84 = 69,046.97 : x
  2. Step 2: Convert to fraction form
    118,951.56/178,370.84 = 69,046.97/x
  3. Step 3: Cross multiply
    118,951.56x = 178,370.84 × 69,046.97
  4. Step 4: Simplify right side
    118,951.56x = 12,315,965,319.12
  5. Step 5: Solve for x
    x = 12,315,965,319.12/118,951.56
  6. Step 6: Final answer
    x = 103,537.65

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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.