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Finding the Fourth Proportional to 411,221.68, 567,606.62 and 239,180.11

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Solution

The fourth proportional to 411,221.68, 567,606.62 and 239,180.11 is: 330,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,221.68 : 567,606.62 = 239,180.11 : x
  2. Step 2: Convert to fraction form
    411,221.68/567,606.62 = 239,180.11/x
  3. Step 3: Cross multiply
    411,221.68x = 567,606.62 × 239,180.11
  4. Step 4: Simplify right side
    411,221.68x = 135,760,212,987.26
  5. Step 5: Solve for x
    x = 135,760,212,987.26/411,221.68
  6. Step 6: Final answer
    x = 330,138.76

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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.