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Finding the Fourth Proportional to 3,654.49, 5,481.74 and 1,057.43

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Solution

The fourth proportional to 3,654.49, 5,481.74 and 1,057.43 is: 1,586.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,654.49 : 5,481.74 = 1,057.43 : x
  2. Step 2: Convert to fraction form
    3,654.49/5,481.74 = 1,057.43/x
  3. Step 3: Cross multiply
    3,654.49x = 5,481.74 × 1,057.43
  4. Step 4: Simplify right side
    3,654.49x = 5,796,552.80
  5. Step 5: Solve for x
    x = 5,796,552.80/3,654.49
  6. Step 6: Final answer
    x = 1,586.14

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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.