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Finding the Fourth Proportional to 203,081.88, 304,971.30 and 124,656.60

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Solution

The fourth proportional to 203,081.88, 304,971.30 and 124,656.60 is: 187,198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,081.88 : 304,971.30 = 124,656.60 : x
  2. Step 2: Convert to fraction form
    203,081.88/304,971.30 = 124,656.60/x
  3. Step 3: Cross multiply
    203,081.88x = 304,971.30 × 124,656.60
  4. Step 4: Simplify right side
    203,081.88x = 38,016,685,355.58
  5. Step 5: Solve for x
    x = 38,016,685,355.58/203,081.88
  6. Step 6: Final answer
    x = 187,198.81

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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.