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Finding the Fourth Proportional to 393,593.28, 543,151.92 and 223,823.52

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Solution

The fourth proportional to 393,593.28, 543,151.92 and 223,823.52 is: 308,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,593.28 : 543,151.92 = 223,823.52 : x
  2. Step 2: Convert to fraction form
    393,593.28/543,151.92 = 223,823.52/x
  3. Step 3: Cross multiply
    393,593.28x = 543,151.92 × 223,823.52
  4. Step 4: Simplify right side
    393,593.28x = 121,570,174,629.16
  5. Step 5: Solve for x
    x = 121,570,174,629.16/393,593.28
  6. Step 6: Final answer
    x = 308,872.59

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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.