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Finding the Fourth Proportional to 118,984.72, 164,197.38 and 67,996.87

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Solution

The fourth proportional to 118,984.72, 164,197.38 and 67,996.87 is: 93,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,984.72 : 164,197.38 = 67,996.87 : x
  2. Step 2: Convert to fraction form
    118,984.72/164,197.38 = 67,996.87/x
  3. Step 3: Cross multiply
    118,984.72x = 164,197.38 × 67,996.87
  4. Step 4: Simplify right side
    118,984.72x = 11,164,907,251.21
  5. Step 5: Solve for x
    x = 11,164,907,251.21/118,984.72
  6. Step 6: Final answer
    x = 93,834.80

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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.