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Finding the Fourth Proportional to 121,464.28, 167,620.28 and 67,749.26

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Solution

The fourth proportional to 121,464.28, 167,620.28 and 67,749.26 is: 93,493.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,464.28 : 167,620.28 = 67,749.26 : x
  2. Step 2: Convert to fraction form
    121,464.28/167,620.28 = 67,749.26/x
  3. Step 3: Cross multiply
    121,464.28x = 167,620.28 × 67,749.26
  4. Step 4: Simplify right side
    121,464.28x = 11,356,149,173.20
  5. Step 5: Solve for x
    x = 11,356,149,173.20/121,464.28
  6. Step 6: Final answer
    x = 93,493.73

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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.