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Finding the Fourth Proportional to 121,460.88, 167,616.31 and 67,749.38

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Solution

The fourth proportional to 121,460.88, 167,616.31 and 67,749.38 is: 93,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,460.88 : 167,616.31 = 67,749.38 : x
  2. Step 2: Convert to fraction form
    121,460.88/167,616.31 = 67,749.38/x
  3. Step 3: Cross multiply
    121,460.88x = 167,616.31 × 67,749.38
  4. Step 4: Simplify right side
    121,460.88x = 11,355,899,903.56
  5. Step 5: Solve for x
    x = 11,355,899,903.56/121,460.88
  6. Step 6: Final answer
    x = 93,494.30

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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.