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Finding the Fourth Proportional to 303,665.09, 455,773.97 and 161,629.56

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Solution

The fourth proportional to 303,665.09, 455,773.97 and 161,629.56 is: 242,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,665.09 : 455,773.97 = 161,629.56 : x
  2. Step 2: Convert to fraction form
    303,665.09/455,773.97 = 161,629.56/x
  3. Step 3: Cross multiply
    303,665.09x = 455,773.97 × 161,629.56
  4. Step 4: Simplify right side
    303,665.09x = 73,666,546,634.63
  5. Step 5: Solve for x
    x = 73,666,546,634.63/303,665.09
  6. Step 6: Final answer
    x = 242,591.43

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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.