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Finding the Fourth Proportional to 367,092.55, 550,474.80 and 142,378.30

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Solution

The fourth proportional to 367,092.55, 550,474.80 and 142,378.30 is: 213,503.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,092.55 : 550,474.80 = 142,378.30 : x
  2. Step 2: Convert to fraction form
    367,092.55/550,474.80 = 142,378.30/x
  3. Step 3: Cross multiply
    367,092.55x = 550,474.80 × 142,378.30
  4. Step 4: Simplify right side
    367,092.55x = 78,375,666,216.84
  5. Step 5: Solve for x
    x = 78,375,666,216.84/367,092.55
  6. Step 6: Final answer
    x = 213,503.83

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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.