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Finding the Fourth Proportional to 415,205.60, 622,324.52 and 190,589.76

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Solution

The fourth proportional to 415,205.60, 622,324.52 and 190,589.76 is: 285,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,205.60 : 622,324.52 = 190,589.76 : x
  2. Step 2: Convert to fraction form
    415,205.60/622,324.52 = 190,589.76/x
  3. Step 3: Cross multiply
    415,205.60x = 622,324.52 × 190,589.76
  4. Step 4: Simplify right side
    415,205.60x = 118,608,680,670.68
  5. Step 5: Solve for x
    x = 118,608,680,670.68/415,205.60
  6. Step 6: Final answer
    x = 285,662.53

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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.