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Finding the Fourth Proportional to 108,003.20, 161,956.20 and 41,421.20

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Solution

The fourth proportional to 108,003.20, 161,956.20 and 41,421.20 is: 62,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,003.20 : 161,956.20 = 41,421.20 : x
  2. Step 2: Convert to fraction form
    108,003.20/161,956.20 = 41,421.20/x
  3. Step 3: Cross multiply
    108,003.20x = 161,956.20 × 41,421.20
  4. Step 4: Simplify right side
    108,003.20x = 6,708,420,151.44
  5. Step 5: Solve for x
    x = 6,708,420,151.44/108,003.20
  6. Step 6: Final answer
    x = 62,113.16

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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.