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Finding the Fourth Proportional to 267,698.52, 401,584.82 and 90,256.28

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Solution

The fourth proportional to 267,698.52, 401,584.82 and 90,256.28 is: 135,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,698.52 : 401,584.82 = 90,256.28 : x
  2. Step 2: Convert to fraction form
    267,698.52/401,584.82 = 90,256.28/x
  3. Step 3: Cross multiply
    267,698.52x = 401,584.82 × 90,256.28
  4. Step 4: Simplify right side
    267,698.52x = 36,245,549,498.46
  5. Step 5: Solve for x
    x = 36,245,549,498.46/267,698.52
  6. Step 6: Final answer
    x = 135,396.90

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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.