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Finding the Fourth Proportional to 367,086.20, 550,629.30 and 255,111.80

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Solution

The fourth proportional to 367,086.20, 550,629.30 and 255,111.80 is: 382,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,086.20 : 550,629.30 = 255,111.80 : x
  2. Step 2: Convert to fraction form
    367,086.20/550,629.30 = 255,111.80/x
  3. Step 3: Cross multiply
    367,086.20x = 550,629.30 × 255,111.80
  4. Step 4: Simplify right side
    367,086.20x = 140,472,031,855.74
  5. Step 5: Solve for x
    x = 140,472,031,855.74/367,086.20
  6. Step 6: Final answer
    x = 382,667.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.