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Finding the Fourth Proportional to 123,209.75, 184,837.43 and 38,991.11

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Solution

The fourth proportional to 123,209.75, 184,837.43 and 38,991.11 is: 58,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,209.75 : 184,837.43 = 38,991.11 : x
  2. Step 2: Convert to fraction form
    123,209.75/184,837.43 = 38,991.11/x
  3. Step 3: Cross multiply
    123,209.75x = 184,837.43 × 38,991.11
  4. Step 4: Simplify right side
    123,209.75x = 7,207,015,446.10
  5. Step 5: Solve for x
    x = 7,207,015,446.10/123,209.75
  6. Step 6: Final answer
    x = 58,493.88

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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.