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Finding the Fourth Proportional to 121,476.54, 167,636.49 and 67,029.20

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Solution

The fourth proportional to 121,476.54, 167,636.49 and 67,029.20 is: 92,499.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,476.54 : 167,636.49 = 67,029.20 : x
  2. Step 2: Convert to fraction form
    121,476.54/167,636.49 = 67,029.20/x
  3. Step 3: Cross multiply
    121,476.54x = 167,636.49 × 67,029.20
  4. Step 4: Simplify right side
    121,476.54x = 11,236,540,297.56
  5. Step 5: Solve for x
    x = 11,236,540,297.56/121,476.54
  6. Step 6: Final answer
    x = 92,499.67

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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.