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Finding the Fourth Proportional to 572,027.13, 857,843.87 and 217,142.64

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Solution

The fourth proportional to 572,027.13, 857,843.87 and 217,142.64 is: 325,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,027.13 : 857,843.87 = 217,142.64 : x
  2. Step 2: Convert to fraction form
    572,027.13/857,843.87 = 217,142.64/x
  3. Step 3: Cross multiply
    572,027.13x = 857,843.87 × 217,142.64
  4. Step 4: Simplify right side
    572,027.13x = 186,274,481,553.90
  5. Step 5: Solve for x
    x = 186,274,481,553.90/572,027.13
  6. Step 6: Final answer
    x = 325,639.24

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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.