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Finding the Fourth Proportional to 201,717.20, 302,446.20 and 83,435.60

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Solution

The fourth proportional to 201,717.20, 302,446.20 and 83,435.60 is: 125,099.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,717.20 : 302,446.20 = 83,435.60 : x
  2. Step 2: Convert to fraction form
    201,717.20/302,446.20 = 83,435.60/x
  3. Step 3: Cross multiply
    201,717.20x = 302,446.20 × 83,435.60
  4. Step 4: Simplify right side
    201,717.20x = 25,234,780,164.72
  5. Step 5: Solve for x
    x = 25,234,780,164.72/201,717.20
  6. Step 6: Final answer
    x = 125,099.79

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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.