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Finding the Fourth Proportional to 165,704.40, 248,491.80 and 60,469.20

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Solution

The fourth proportional to 165,704.40, 248,491.80 and 60,469.20 is: 90,680.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,704.40 : 248,491.80 = 60,469.20 : x
  2. Step 2: Convert to fraction form
    165,704.40/248,491.80 = 60,469.20/x
  3. Step 3: Cross multiply
    165,704.40x = 248,491.80 × 60,469.20
  4. Step 4: Simplify right side
    165,704.40x = 15,026,100,352.56
  5. Step 5: Solve for x
    x = 15,026,100,352.56/165,704.40
  6. Step 6: Final answer
    x = 90,680.15

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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.