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Finding the Fourth Proportional to 98,912.88, 148,466.52 and 72,542.52

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Solution

The fourth proportional to 98,912.88, 148,466.52 and 72,542.52 is: 108,885.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,912.88 : 148,466.52 = 72,542.52 : x
  2. Step 2: Convert to fraction form
    98,912.88/148,466.52 = 72,542.52/x
  3. Step 3: Cross multiply
    98,912.88x = 148,466.52 × 72,542.52
  4. Step 4: Simplify right side
    98,912.88x = 10,770,135,496.43
  5. Step 5: Solve for x
    x = 10,770,135,496.43/98,912.88
  6. Step 6: Final answer
    x = 108,885.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.