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Finding the Fourth Proportional to 118,995.72, 164,212.74 and 68,693.64

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Solution

The fourth proportional to 118,995.72, 164,212.74 and 68,693.64 is: 94,796.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,995.72 : 164,212.74 = 68,693.64 : x
  2. Step 2: Convert to fraction form
    118,995.72/164,212.74 = 68,693.64/x
  3. Step 3: Cross multiply
    118,995.72x = 164,212.74 × 68,693.64
  4. Step 4: Simplify right side
    118,995.72x = 11,280,370,844.97
  5. Step 5: Solve for x
    x = 11,280,370,844.97/118,995.72
  6. Step 6: Final answer
    x = 94,796.44

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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.