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Finding the Fourth Proportional to 108,489.69, 162,742.73 and 33,617.39

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Solution

The fourth proportional to 108,489.69, 162,742.73 and 33,617.39 is: 50,428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,489.69 : 162,742.73 = 33,617.39 : x
  2. Step 2: Convert to fraction form
    108,489.69/162,742.73 = 33,617.39/x
  3. Step 3: Cross multiply
    108,489.69x = 162,742.73 × 33,617.39
  4. Step 4: Simplify right side
    108,489.69x = 5,470,985,824.07
  5. Step 5: Solve for x
    x = 5,470,985,824.07/108,489.69
  6. Step 6: Final answer
    x = 50,428.62

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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.