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Finding the Fourth Proportional to 33,480.61, 50,143.95 and 19,405.82

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Solution

The fourth proportional to 33,480.61, 50,143.95 and 19,405.82 is: 29,064.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,480.61 : 50,143.95 = 19,405.82 : x
  2. Step 2: Convert to fraction form
    33,480.61/50,143.95 = 19,405.82/x
  3. Step 3: Cross multiply
    33,480.61x = 50,143.95 × 19,405.82
  4. Step 4: Simplify right side
    33,480.61x = 973,084,593.15
  5. Step 5: Solve for x
    x = 973,084,593.15/33,480.61
  6. Step 6: Final answer
    x = 29,064.13

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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.