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Finding the Fourth Proportional to 108,662.54, 149,954.20 and 60,915.88

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Solution

The fourth proportional to 108,662.54, 149,954.20 and 60,915.88 is: 84,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,662.54 : 149,954.20 = 60,915.88 : x
  2. Step 2: Convert to fraction form
    108,662.54/149,954.20 = 60,915.88/x
  3. Step 3: Cross multiply
    108,662.54x = 149,954.20 × 60,915.88
  4. Step 4: Simplify right side
    108,662.54x = 9,134,592,087.85
  5. Step 5: Solve for x
    x = 9,134,592,087.85/108,662.54
  6. Step 6: Final answer
    x = 84,063.86

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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.