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Finding the Fourth Proportional to 397,791.27, 548,956.44 and 216,504.36

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Solution

The fourth proportional to 397,791.27, 548,956.44 and 216,504.36 is: 298,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,791.27 : 548,956.44 = 216,504.36 : x
  2. Step 2: Convert to fraction form
    397,791.27/548,956.44 = 216,504.36/x
  3. Step 3: Cross multiply
    397,791.27x = 548,956.44 × 216,504.36
  4. Step 4: Simplify right side
    397,791.27x = 118,851,462,710.08
  5. Step 5: Solve for x
    x = 118,851,462,710.08/397,791.27
  6. Step 6: Final answer
    x = 298,778.46

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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.