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Finding the Fourth Proportional to 73,820.88, 110,717.52 and 19,786.32

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Solution

The fourth proportional to 73,820.88, 110,717.52 and 19,786.32 is: 29,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,820.88 : 110,717.52 = 19,786.32 : x
  2. Step 2: Convert to fraction form
    73,820.88/110,717.52 = 19,786.32/x
  3. Step 3: Cross multiply
    73,820.88x = 110,717.52 × 19,786.32
  4. Step 4: Simplify right side
    73,820.88x = 2,190,692,280.33
  5. Step 5: Solve for x
    x = 2,190,692,280.33/73,820.88
  6. Step 6: Final answer
    x = 29,675.78

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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.