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Finding the Fourth Proportional to 121,671.88, 167,905.44 and 67,957.67

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Solution

The fourth proportional to 121,671.88, 167,905.44 and 67,957.67 is: 93,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,671.88 : 167,905.44 = 67,957.67 : x
  2. Step 2: Convert to fraction form
    121,671.88/167,905.44 = 67,957.67/x
  3. Step 3: Cross multiply
    121,671.88x = 167,905.44 × 67,957.67
  4. Step 4: Simplify right side
    121,671.88x = 11,410,462,902.49
  5. Step 5: Solve for x
    x = 11,410,462,902.49/121,671.88
  6. Step 6: Final answer
    x = 93,780.61

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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.