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Finding the Fourth Proportional to 263,276.10, 394,914.15 and 156,987.90

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Solution

The fourth proportional to 263,276.10, 394,914.15 and 156,987.90 is: 235,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,276.10 : 394,914.15 = 156,987.90 : x
  2. Step 2: Convert to fraction form
    263,276.10/394,914.15 = 156,987.90/x
  3. Step 3: Cross multiply
    263,276.10x = 394,914.15 × 156,987.90
  4. Step 4: Simplify right side
    263,276.10x = 61,996,743,088.79
  5. Step 5: Solve for x
    x = 61,996,743,088.79/263,276.10
  6. Step 6: Final answer
    x = 235,481.85

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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.