Home / 82,175.25-123,262.89-19,845.75

Finding the Fourth Proportional to 82,175.25, 123,262.89 and 19,845.75

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Solution

The fourth proportional to 82,175.25, 123,262.89 and 19,845.75 is: 29,768.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,175.25 : 123,262.89 = 19,845.75 : x
  2. Step 2: Convert to fraction form
    82,175.25/123,262.89 = 19,845.75/x
  3. Step 3: Cross multiply
    82,175.25x = 123,262.89 × 19,845.75
  4. Step 4: Simplify right side
    82,175.25x = 2,446,244,499.22
  5. Step 5: Solve for x
    x = 2,446,244,499.22/82,175.25
  6. Step 6: Final answer
    x = 29,768.63

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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.