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Finding the Fourth Proportional to 141,052.80, 194,649.60 and 80,659.20

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Solution

The fourth proportional to 141,052.80, 194,649.60 and 80,659.20 is: 111,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,052.80 : 194,649.60 = 80,659.20 : x
  2. Step 2: Convert to fraction form
    141,052.80/194,649.60 = 80,659.20/x
  3. Step 3: Cross multiply
    141,052.80x = 194,649.60 × 80,659.20
  4. Step 4: Simplify right side
    141,052.80x = 15,700,281,016.32
  5. Step 5: Solve for x
    x = 15,700,281,016.32/141,052.80
  6. Step 6: Final answer
    x = 111,307.83

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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.