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Finding the Fourth Proportional to 121,081.64, 167,093.48 and 67,368.92

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Solution

The fourth proportional to 121,081.64, 167,093.48 and 67,368.92 is: 92,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,081.64 : 167,093.48 = 67,368.92 : x
  2. Step 2: Convert to fraction form
    121,081.64/167,093.48 = 67,368.92/x
  3. Step 3: Cross multiply
    121,081.64x = 167,093.48 × 67,368.92
  4. Step 4: Simplify right side
    121,081.64x = 11,256,906,619.60
  5. Step 5: Solve for x
    x = 11,256,906,619.60/121,081.64
  6. Step 6: Final answer
    x = 92,969.56

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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.