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Finding the Fourth Proportional to 203,911.89, 281,334.92 and 117,839.51

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Solution

The fourth proportional to 203,911.89, 281,334.92 and 117,839.51 is: 162,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,911.89 : 281,334.92 = 117,839.51 : x
  2. Step 2: Convert to fraction form
    203,911.89/281,334.92 = 117,839.51/x
  3. Step 3: Cross multiply
    203,911.89x = 281,334.92 × 117,839.51
  4. Step 4: Simplify right side
    203,911.89x = 33,152,368,177.82
  5. Step 5: Solve for x
    x = 33,152,368,177.82/203,911.89
  6. Step 6: Final answer
    x = 162,581.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.