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Finding the Fourth Proportional to 121,573.44, 167,770.08 and 71,262.72

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Solution

The fourth proportional to 121,573.44, 167,770.08 and 71,262.72 is: 98,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,573.44 : 167,770.08 = 71,262.72 : x
  2. Step 2: Convert to fraction form
    121,573.44/167,770.08 = 71,262.72/x
  3. Step 3: Cross multiply
    121,573.44x = 167,770.08 × 71,262.72
  4. Step 4: Simplify right side
    121,573.44x = 11,955,752,235.42
  5. Step 5: Solve for x
    x = 11,955,752,235.42/121,573.44
  6. Step 6: Final answer
    x = 98,341.81

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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.