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Finding the Fourth Proportional to 203,583.81, 280,761.60 and 127,109.82

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Solution

The fourth proportional to 203,583.81, 280,761.60 and 127,109.82 is: 175,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,583.81 : 280,761.60 = 127,109.82 : x
  2. Step 2: Convert to fraction form
    203,583.81/280,761.60 = 127,109.82/x
  3. Step 3: Cross multiply
    203,583.81x = 280,761.60 × 127,109.82
  4. Step 4: Simplify right side
    203,583.81x = 35,687,556,438.91
  5. Step 5: Solve for x
    x = 35,687,556,438.91/203,583.81
  6. Step 6: Final answer
    x = 175,296.63

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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.