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Finding the Fourth Proportional to 99,912.60, 149,855.22 and 33,351.21

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Solution

The fourth proportional to 99,912.60, 149,855.22 and 33,351.21 is: 50,022.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.60 : 149,855.22 = 33,351.21 : x
  2. Step 2: Convert to fraction form
    99,912.60/149,855.22 = 33,351.21/x
  3. Step 3: Cross multiply
    99,912.60x = 149,855.22 × 33,351.21
  4. Step 4: Simplify right side
    99,912.60x = 4,997,852,911.82
  5. Step 5: Solve for x
    x = 4,997,852,911.82/99,912.60
  6. Step 6: Final answer
    x = 50,022.25

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1.5x scale

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.