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Finding the Fourth Proportional to 393,535.92, 543,076.92 and 223,770

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Solution

The fourth proportional to 393,535.92, 543,076.92 and 223,770 is: 308,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,535.92 : 543,076.92 = 223,770 : x
  2. Step 2: Convert to fraction form
    393,535.92/543,076.92 = 223,770/x
  3. Step 3: Cross multiply
    393,535.92x = 543,076.92 × 223,770
  4. Step 4: Simplify right side
    393,535.92x = 121,524,322,388.40
  5. Step 5: Solve for x
    x = 121,524,322,388.40/393,535.92
  6. Step 6: Final answer
    x = 308,801.09

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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.