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Finding the Fourth Proportional to 141,201.78, 194,859.53 and 80,768.70

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Solution

The fourth proportional to 141,201.78, 194,859.53 and 80,768.70 is: 111,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,201.78 : 194,859.53 = 80,768.70 : x
  2. Step 2: Convert to fraction form
    141,201.78/194,859.53 = 80,768.70/x
  3. Step 3: Cross multiply
    141,201.78x = 194,859.53 × 80,768.70
  4. Step 4: Simplify right side
    141,201.78x = 15,738,550,516.87
  5. Step 5: Solve for x
    x = 15,738,550,516.87/141,201.78
  6. Step 6: Final answer
    x = 111,461.42

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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.