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Finding the Fourth Proportional to 33,173.71, 49,643.70 and 20,699.61

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Solution

The fourth proportional to 33,173.71, 49,643.70 and 20,699.61 is: 30,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,173.71 : 49,643.70 = 20,699.61 : x
  2. Step 2: Convert to fraction form
    33,173.71/49,643.70 = 20,699.61/x
  3. Step 3: Cross multiply
    33,173.71x = 49,643.70 × 20,699.61
  4. Step 4: Simplify right side
    33,173.71x = 1,027,604,965.17
  5. Step 5: Solve for x
    x = 1,027,604,965.17/33,173.71
  6. Step 6: Final answer
    x = 30,976.49

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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.