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Finding the Fourth Proportional to 123,211.39, 184,839.86 and 38,992.75

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Solution

The fourth proportional to 123,211.39, 184,839.86 and 38,992.75 is: 58,496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,211.39 : 184,839.86 = 38,992.75 : x
  2. Step 2: Convert to fraction form
    123,211.39/184,839.86 = 38,992.75/x
  3. Step 3: Cross multiply
    123,211.39x = 184,839.86 × 38,992.75
  4. Step 4: Simplify right side
    123,211.39x = 7,207,414,451.02
  5. Step 5: Solve for x
    x = 7,207,414,451.02/123,211.39
  6. Step 6: Final answer
    x = 58,496.33

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1.5x scale

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.