Home / 263,147.10-394,720.65-96,999.90

Finding the Fourth Proportional to 263,147.10, 394,720.65 and 96,999.90

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Solution

The fourth proportional to 263,147.10, 394,720.65 and 96,999.90 is: 145,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,147.10 : 394,720.65 = 96,999.90 : x
  2. Step 2: Convert to fraction form
    263,147.10/394,720.65 = 96,999.90/x
  3. Step 3: Cross multiply
    263,147.10x = 394,720.65 × 96,999.90
  4. Step 4: Simplify right side
    263,147.10x = 38,287,863,577.94
  5. Step 5: Solve for x
    x = 38,287,863,577.94/263,147.10
  6. Step 6: Final answer
    x = 145,499.85

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Double scale
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Similar ratio
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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.