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Finding the Fourth Proportional to 269,079.40, 403,619.10 and 82,066.60

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Solution

The fourth proportional to 269,079.40, 403,619.10 and 82,066.60 is: 123,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,079.40 : 403,619.10 = 82,066.60 : x
  2. Step 2: Convert to fraction form
    269,079.40/403,619.10 = 82,066.60/x
  3. Step 3: Cross multiply
    269,079.40x = 403,619.10 × 82,066.60
  4. Step 4: Simplify right side
    269,079.40x = 33,123,647,232.06
  5. Step 5: Solve for x
    x = 33,123,647,232.06/269,079.40
  6. Step 6: Final answer
    x = 123,099.90

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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.