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Finding the Fourth Proportional to 267,890.73, 401,556.63 and 90,336.69

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Solution

The fourth proportional to 267,890.73, 401,556.63 and 90,336.69 is: 135,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,890.73 : 401,556.63 = 90,336.69 : x
  2. Step 2: Convert to fraction form
    267,890.73/401,556.63 = 90,336.69/x
  3. Step 3: Cross multiply
    267,890.73x = 401,556.63 × 90,336.69
  4. Step 4: Simplify right side
    267,890.73x = 36,275,296,801.75
  5. Step 5: Solve for x
    x = 36,275,296,801.75/267,890.73
  6. Step 6: Final answer
    x = 135,410.80

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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.