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Finding the Fourth Proportional to 121,425.88, 167,579.66 and 73,675.48

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Solution

The fourth proportional to 121,425.88, 167,579.66 and 73,675.48 is: 101,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,425.88 : 167,579.66 = 73,675.48 : x
  2. Step 2: Convert to fraction form
    121,425.88/167,579.66 = 73,675.48/x
  3. Step 3: Cross multiply
    121,425.88x = 167,579.66 × 73,675.48
  4. Step 4: Simplify right side
    121,425.88x = 12,346,511,888.74
  5. Step 5: Solve for x
    x = 12,346,511,888.74/121,425.88
  6. Step 6: Final answer
    x = 101,679.41

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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.