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Finding the Fourth Proportional to 503,725.20, 755,328.60 and 188,019.60

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Solution

The fourth proportional to 503,725.20, 755,328.60 and 188,019.60 is: 281,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,725.20 : 755,328.60 = 188,019.60 : x
  2. Step 2: Convert to fraction form
    503,725.20/755,328.60 = 188,019.60/x
  3. Step 3: Cross multiply
    503,725.20x = 755,328.60 × 188,019.60
  4. Step 4: Simplify right side
    503,725.20x = 142,016,581,240.56
  5. Step 5: Solve for x
    x = 142,016,581,240.56/503,725.20
  6. Step 6: Final answer
    x = 281,932.65

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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.