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Finding the Fourth Proportional to 121,673.01, 167,906.99 and 67,958.79

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Solution

The fourth proportional to 121,673.01, 167,906.99 and 67,958.79 is: 93,782.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,673.01 : 167,906.99 = 67,958.79 : x
  2. Step 2: Convert to fraction form
    121,673.01/167,906.99 = 67,958.79/x
  3. Step 3: Cross multiply
    121,673.01x = 167,906.99 × 67,958.79
  4. Step 4: Simplify right side
    121,673.01x = 11,410,755,533.15
  5. Step 5: Solve for x
    x = 11,410,755,533.15/121,673.01
  6. Step 6: Final answer
    x = 93,782.14

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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.