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Finding the Fourth Proportional to 108,647.12, 162,981.25 and 33,747.12

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Solution

The fourth proportional to 108,647.12, 162,981.25 and 33,747.12 is: 50,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,647.12 : 162,981.25 = 33,747.12 : x
  2. Step 2: Convert to fraction form
    108,647.12/162,981.25 = 33,747.12/x
  3. Step 3: Cross multiply
    108,647.12x = 162,981.25 × 33,747.12
  4. Step 4: Simplify right side
    108,647.12x = 5,500,147,717.13
  5. Step 5: Solve for x
    x = 5,500,147,717.13/108,647.12
  6. Step 6: Final answer
    x = 50,623.96

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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.