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Finding the Fourth Proportional to 108,618.45, 162,905.41 and 41,127.20

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Solution

The fourth proportional to 108,618.45, 162,905.41 and 41,127.20 is: 61,682.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,618.45 : 162,905.41 = 41,127.20 : x
  2. Step 2: Convert to fraction form
    108,618.45/162,905.41 = 41,127.20/x
  3. Step 3: Cross multiply
    108,618.45x = 162,905.41 × 41,127.20
  4. Step 4: Simplify right side
    108,618.45x = 6,699,843,910.93
  5. Step 5: Solve for x
    x = 6,699,843,910.93/108,618.45
  6. Step 6: Final answer
    x = 61,682.37

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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.