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Finding the Fourth Proportional to 251,239.82, 376,778.75 and 82,720.04

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Solution

The fourth proportional to 251,239.82, 376,778.75 and 82,720.04 is: 124,053.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,239.82 : 376,778.75 = 82,720.04 : x
  2. Step 2: Convert to fraction form
    251,239.82/376,778.75 = 82,720.04/x
  3. Step 3: Cross multiply
    251,239.82x = 376,778.75 × 82,720.04
  4. Step 4: Simplify right side
    251,239.82x = 31,167,150,973.66
  5. Step 5: Solve for x
    x = 31,167,150,973.66/251,239.82
  6. Step 6: Final answer
    x = 124,053.39

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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.