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Finding the Fourth Proportional to 393,528.86, 543,067.29 and 223,762.97

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Solution

The fourth proportional to 393,528.86, 543,067.29 and 223,762.97 is: 308,791.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,528.86 : 543,067.29 = 223,762.97 : x
  2. Step 2: Convert to fraction form
    393,528.86/543,067.29 = 223,762.97/x
  3. Step 3: Cross multiply
    393,528.86x = 543,067.29 × 223,762.97
  4. Step 4: Simplify right side
    393,528.86x = 121,518,349,720.25
  5. Step 5: Solve for x
    x = 121,518,349,720.25/393,528.86
  6. Step 6: Final answer
    x = 308,791.46

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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.