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Finding the Fourth Proportional to 386,558.68, 533,450.46 and 216,791.32

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Solution

The fourth proportional to 386,558.68, 533,450.46 and 216,791.32 is: 299,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,558.68 : 533,450.46 = 216,791.32 : x
  2. Step 2: Convert to fraction form
    386,558.68/533,450.46 = 216,791.32/x
  3. Step 3: Cross multiply
    386,558.68x = 533,450.46 × 216,791.32
  4. Step 4: Simplify right side
    386,558.68x = 115,647,429,378.01
  5. Step 5: Solve for x
    x = 115,647,429,378.01/386,558.68
  6. Step 6: Final answer
    x = 299,171.73

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1.5x scale

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.