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Finding the Fourth Proportional to 263,439.55, 395,176.31 and 92,640.31

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Solution

The fourth proportional to 263,439.55, 395,176.31 and 92,640.31 is: 138,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,439.55 : 395,176.31 = 92,640.31 : x
  2. Step 2: Convert to fraction form
    263,439.55/395,176.31 = 92,640.31/x
  3. Step 3: Cross multiply
    263,439.55x = 395,176.31 × 92,640.31
  4. Step 4: Simplify right side
    263,439.55x = 36,609,255,863.06
  5. Step 5: Solve for x
    x = 36,609,255,863.06/263,439.55
  6. Step 6: Final answer
    x = 138,966.44

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1.5x scale

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.