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Finding the Fourth Proportional to 573,910.78, 792,065.11 and 328,983.20

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Solution

The fourth proportional to 573,910.78, 792,065.11 and 328,983.20 is: 454,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,910.78 : 792,065.11 = 328,983.20 : x
  2. Step 2: Convert to fraction form
    573,910.78/792,065.11 = 328,983.20/x
  3. Step 3: Cross multiply
    573,910.78x = 792,065.11 × 328,983.20
  4. Step 4: Simplify right side
    573,910.78x = 260,576,114,496.15
  5. Step 5: Solve for x
    x = 260,576,114,496.15/573,910.78
  6. Step 6: Final answer
    x = 454,035.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.