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Finding the Fourth Proportional to 386,553.54, 579,688.14 and 133,769.14

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Solution

The fourth proportional to 386,553.54, 579,688.14 and 133,769.14 is: 200,604.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,553.54 : 579,688.14 = 133,769.14 : x
  2. Step 2: Convert to fraction form
    386,553.54/579,688.14 = 133,769.14/x
  3. Step 3: Cross multiply
    386,553.54x = 579,688.14 × 133,769.14
  4. Step 4: Simplify right side
    386,553.54x = 77,544,383,956.00
  5. Step 5: Solve for x
    x = 77,544,383,956.00/386,553.54
  6. Step 6: Final answer
    x = 200,604.51

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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.