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Finding the Fourth Proportional to 121,426.88, 167,581.04 and 73,676.48

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Solution

The fourth proportional to 121,426.88, 167,581.04 and 73,676.48 is: 101,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,426.88 : 167,581.04 = 73,676.48 : x
  2. Step 2: Convert to fraction form
    121,426.88/167,581.04 = 73,676.48/x
  3. Step 3: Cross multiply
    121,426.88x = 167,581.04 × 73,676.48
  4. Step 4: Simplify right side
    121,426.88x = 12,346,781,141.94
  5. Step 5: Solve for x
    x = 12,346,781,141.94/121,426.88
  6. Step 6: Final answer
    x = 101,680.79

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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.