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Finding the Fourth Proportional to 33,129.80, 49,699.62 and 10,945.52

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Solution

The fourth proportional to 33,129.80, 49,699.62 and 10,945.52 is: 16,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.80 : 49,699.62 = 10,945.52 : x
  2. Step 2: Convert to fraction form
    33,129.80/49,699.62 = 10,945.52/x
  3. Step 3: Cross multiply
    33,129.80x = 49,699.62 × 10,945.52
  4. Step 4: Simplify right side
    33,129.80x = 543,988,184.70
  5. Step 5: Solve for x
    x = 543,988,184.70/33,129.80
  6. Step 6: Final answer
    x = 16,419.91

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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.