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Finding the Fourth Proportional to 141,074.91, 194,680.40 and 80,648.91

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Solution

The fourth proportional to 141,074.91, 194,680.40 and 80,648.91 is: 111,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,074.91 : 194,680.40 = 80,648.91 : x
  2. Step 2: Convert to fraction form
    141,074.91/194,680.40 = 80,648.91/x
  3. Step 3: Cross multiply
    141,074.91x = 194,680.40 × 80,648.91
  4. Step 4: Simplify right side
    141,074.91x = 15,700,761,655.12
  5. Step 5: Solve for x
    x = 15,700,761,655.12/141,074.91
  6. Step 6: Final answer
    x = 111,293.79

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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.