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Finding the Fourth Proportional to 108,626.60, 162,821.10 and 38,469.80

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Solution

The fourth proportional to 108,626.60, 162,821.10 and 38,469.80 is: 57,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,626.60 : 162,821.10 = 38,469.80 : x
  2. Step 2: Convert to fraction form
    108,626.60/162,821.10 = 38,469.80/x
  3. Step 3: Cross multiply
    108,626.60x = 162,821.10 × 38,469.80
  4. Step 4: Simplify right side
    108,626.60x = 6,263,695,152.78
  5. Step 5: Solve for x
    x = 6,263,695,152.78/108,626.60
  6. Step 6: Final answer
    x = 57,662.63

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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.