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Finding the Fourth Proportional to 82,736.80, 124,105.20 and 60,704.80

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Solution

The fourth proportional to 82,736.80, 124,105.20 and 60,704.80 is: 91,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,736.80 : 124,105.20 = 60,704.80 : x
  2. Step 2: Convert to fraction form
    82,736.80/124,105.20 = 60,704.80/x
  3. Step 3: Cross multiply
    82,736.80x = 124,105.20 × 60,704.80
  4. Step 4: Simplify right side
    82,736.80x = 7,533,781,344.96
  5. Step 5: Solve for x
    x = 7,533,781,344.96/82,736.80
  6. Step 6: Final answer
    x = 91,057.20

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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.