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Finding the Fourth Proportional to 303,619.44, 455,428.20 and 82,003.44

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Solution

The fourth proportional to 303,619.44, 455,428.20 and 82,003.44 is: 123,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,619.44 : 455,428.20 = 82,003.44 : x
  2. Step 2: Convert to fraction form
    303,619.44/455,428.20 = 82,003.44/x
  3. Step 3: Cross multiply
    303,619.44x = 455,428.20 × 82,003.44
  4. Step 4: Simplify right side
    303,619.44x = 37,346,679,073.01
  5. Step 5: Solve for x
    x = 37,346,679,073.01/303,619.44
  6. Step 6: Final answer
    x = 123,004.90

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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.