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Finding the Fourth Proportional to 322,558.80, 483,199.44 and 221,107.20

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Solution

The fourth proportional to 322,558.80, 483,199.44 and 221,107.20 is: 331,222.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,558.80 : 483,199.44 = 221,107.20 : x
  2. Step 2: Convert to fraction form
    322,558.80/483,199.44 = 221,107.20/x
  3. Step 3: Cross multiply
    322,558.80x = 483,199.44 × 221,107.20
  4. Step 4: Simplify right side
    322,558.80x = 106,838,875,219.97
  5. Step 5: Solve for x
    x = 106,838,875,219.97/322,558.80
  6. Step 6: Final answer
    x = 331,222.94

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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.