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Finding the Fourth Proportional to 99,481.20, 149,124.60 and 88,983.60

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Solution

The fourth proportional to 99,481.20, 149,124.60 and 88,983.60 is: 133,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,481.20 : 149,124.60 = 88,983.60 : x
  2. Step 2: Convert to fraction form
    99,481.20/149,124.60 = 88,983.60/x
  3. Step 3: Cross multiply
    99,481.20x = 149,124.60 × 88,983.60
  4. Step 4: Simplify right side
    99,481.20x = 13,269,643,756.56
  5. Step 5: Solve for x
    x = 13,269,643,756.56/99,481.20
  6. Step 6: Final answer
    x = 133,388.46

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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.