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Finding the Fourth Proportional to 108,102.60, 161,765.10 and 73,110.60

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Solution

The fourth proportional to 108,102.60, 161,765.10 and 73,110.60 is: 109,402.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,102.60 : 161,765.10 = 73,110.60 : x
  2. Step 2: Convert to fraction form
    108,102.60/161,765.10 = 73,110.60/x
  3. Step 3: Cross multiply
    108,102.60x = 161,765.10 × 73,110.60
  4. Step 4: Simplify right side
    108,102.60x = 11,826,743,520.06
  5. Step 5: Solve for x
    x = 11,826,743,520.06/108,102.60
  6. Step 6: Final answer
    x = 109,402.95

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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.