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Finding the Fourth Proportional to 458,887.14, 687,553.38 and 281,022.48

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Solution

The fourth proportional to 458,887.14, 687,553.38 and 281,022.48 is: 421,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,887.14 : 687,553.38 = 281,022.48 : x
  2. Step 2: Convert to fraction form
    458,887.14/687,553.38 = 281,022.48/x
  3. Step 3: Cross multiply
    458,887.14x = 687,553.38 × 281,022.48
  4. Step 4: Simplify right side
    458,887.14x = 193,217,955,979.98
  5. Step 5: Solve for x
    x = 193,217,955,979.98/458,887.14
  6. Step 6: Final answer
    x = 421,057.68

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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.