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Finding the Fourth Proportional to 203,221.75, 304,832.66 and 84,828.51

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Solution

The fourth proportional to 203,221.75, 304,832.66 and 84,828.51 is: 127,242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,221.75 : 304,832.66 = 84,828.51 : x
  2. Step 2: Convert to fraction form
    203,221.75/304,832.66 = 84,828.51/x
  3. Step 3: Cross multiply
    203,221.75x = 304,832.66 × 84,828.51
  4. Step 4: Simplify right side
    203,221.75x = 25,858,500,347.14
  5. Step 5: Solve for x
    x = 25,858,500,347.14/203,221.75
  6. Step 6: Final answer
    x = 127,242.78

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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.