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Finding the Fourth Proportional to 220,843.62, 304,731.06 and 124,043.76

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Solution

The fourth proportional to 220,843.62, 304,731.06 and 124,043.76 is: 171,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,843.62 : 304,731.06 = 124,043.76 : x
  2. Step 2: Convert to fraction form
    220,843.62/304,731.06 = 124,043.76/x
  3. Step 3: Cross multiply
    220,843.62x = 304,731.06 × 124,043.76
  4. Step 4: Simplify right side
    220,843.62x = 37,799,986,471.19
  5. Step 5: Solve for x
    x = 37,799,986,471.19/220,843.62
  6. Step 6: Final answer
    x = 171,161.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.