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Finding the Fourth Proportional to 73,221.88, 109,832.82 and 17,817.88

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Solution

The fourth proportional to 73,221.88, 109,832.82 and 17,817.88 is: 26,726.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,221.88 : 109,832.82 = 17,817.88 : x
  2. Step 2: Convert to fraction form
    73,221.88/109,832.82 = 17,817.88/x
  3. Step 3: Cross multiply
    73,221.88x = 109,832.82 × 17,817.88
  4. Step 4: Simplify right side
    73,221.88x = 1,956,987,368.57
  5. Step 5: Solve for x
    x = 1,956,987,368.57/73,221.88
  6. Step 6: Final answer
    x = 26,726.81

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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.