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Finding the Fourth Proportional to 118,286.69, 176,524.82 and 105,664.97

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Solution

The fourth proportional to 118,286.69, 176,524.82 and 105,664.97 is: 157,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,286.69 : 176,524.82 = 105,664.97 : x
  2. Step 2: Convert to fraction form
    118,286.69/176,524.82 = 105,664.97/x
  3. Step 3: Cross multiply
    118,286.69x = 176,524.82 × 105,664.97
  4. Step 4: Simplify right side
    118,286.69x = 18,652,489,191.09
  5. Step 5: Solve for x
    x = 18,652,489,191.09/118,286.69
  6. Step 6: Final answer
    x = 157,688.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.