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Finding the Fourth Proportional to 118,996.72, 164,214.12 and 68,694.64

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Solution

The fourth proportional to 118,996.72, 164,214.12 and 68,694.64 is: 94,797.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,996.72 : 164,214.12 = 68,694.64 : x
  2. Step 2: Convert to fraction form
    118,996.72/164,214.12 = 68,694.64/x
  3. Step 3: Cross multiply
    118,996.72x = 164,214.12 × 68,694.64
  4. Step 4: Simplify right side
    118,996.72x = 11,280,629,856.32
  5. Step 5: Solve for x
    x = 11,280,629,856.32/118,996.72
  6. Step 6: Final answer
    x = 94,797.82

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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.