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Finding the Fourth Proportional to 264,447.40, 396,630.60 and 86,954.80

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Solution

The fourth proportional to 264,447.40, 396,630.60 and 86,954.80 is: 130,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,447.40 : 396,630.60 = 86,954.80 : x
  2. Step 2: Convert to fraction form
    264,447.40/396,630.60 = 86,954.80/x
  3. Step 3: Cross multiply
    264,447.40x = 396,630.60 × 86,954.80
  4. Step 4: Simplify right side
    264,447.40x = 34,488,934,496.88
  5. Step 5: Solve for x
    x = 34,488,934,496.88/264,447.40
  6. Step 6: Final answer
    x = 130,418.88

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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.