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Finding the Fourth Proportional to 121,672.26, 167,905.95 and 67,958.04

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Solution

The fourth proportional to 121,672.26, 167,905.95 and 67,958.04 is: 93,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,672.26 : 167,905.95 = 67,958.04 : x
  2. Step 2: Convert to fraction form
    121,672.26/167,905.95 = 67,958.04/x
  3. Step 3: Cross multiply
    121,672.26x = 167,905.95 × 67,958.04
  4. Step 4: Simplify right side
    121,672.26x = 11,410,559,266.34
  5. Step 5: Solve for x
    x = 11,410,559,266.34/121,672.26
  6. Step 6: Final answer
    x = 93,781.11

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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.