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Finding the Fourth Proportional to 121,679.16, 167,900.64 and 67,957.32

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Solution

The fourth proportional to 121,679.16, 167,900.64 and 67,957.32 is: 93,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,679.16 : 167,900.64 = 67,957.32 : x
  2. Step 2: Convert to fraction form
    121,679.16/167,900.64 = 67,957.32/x
  3. Step 3: Cross multiply
    121,679.16x = 167,900.64 × 67,957.32
  4. Step 4: Simplify right side
    121,679.16x = 11,410,077,520.68
  5. Step 5: Solve for x
    x = 11,410,077,520.68/121,679.16
  6. Step 6: Final answer
    x = 93,771.83

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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.