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Finding the Fourth Proportional to 99,917.49, 149,820.63 and 33,321.27

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Solution

The fourth proportional to 99,917.49, 149,820.63 and 33,321.27 is: 49,963.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,917.49 : 149,820.63 = 33,321.27 : x
  2. Step 2: Convert to fraction form
    99,917.49/149,820.63 = 33,321.27/x
  3. Step 3: Cross multiply
    99,917.49x = 149,820.63 × 33,321.27
  4. Step 4: Simplify right side
    99,917.49x = 4,992,213,663.80
  5. Step 5: Solve for x
    x = 4,992,213,663.80/99,917.49
  6. Step 6: Final answer
    x = 49,963.36

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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.