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Finding the Fourth Proportional to 99,763.98, 149,481.54 and 89,475.36

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Solution

The fourth proportional to 99,763.98, 149,481.54 and 89,475.36 is: 134,065.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,763.98 : 149,481.54 = 89,475.36 : x
  2. Step 2: Convert to fraction form
    99,763.98/149,481.54 = 89,475.36/x
  3. Step 3: Cross multiply
    99,763.98x = 149,481.54 × 89,475.36
  4. Step 4: Simplify right side
    99,763.98x = 13,374,914,604.85
  5. Step 5: Solve for x
    x = 13,374,914,604.85/99,763.98
  6. Step 6: Final answer
    x = 134,065.57

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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.