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Finding the Fourth Proportional to 118,337.44, 177,374.67 and 90,164.61

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Solution

The fourth proportional to 118,337.44, 177,374.67 and 90,164.61 is: 135,146.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,337.44 : 177,374.67 = 90,164.61 : x
  2. Step 2: Convert to fraction form
    118,337.44/177,374.67 = 90,164.61/x
  3. Step 3: Cross multiply
    118,337.44x = 177,374.67 × 90,164.61
  4. Step 4: Simplify right side
    118,337.44x = 15,992,917,944.43
  5. Step 5: Solve for x
    x = 15,992,917,944.43/118,337.44
  6. Step 6: Final answer
    x = 135,146.73

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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.