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Finding the Fourth Proportional to 113,716.92, 156,736.62 and 79,735.80

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Solution

The fourth proportional to 113,716.92, 156,736.62 and 79,735.80 is: 109,900.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,716.92 : 156,736.62 = 79,735.80 : x
  2. Step 2: Convert to fraction form
    113,716.92/156,736.62 = 79,735.80/x
  3. Step 3: Cross multiply
    113,716.92x = 156,736.62 × 79,735.80
  4. Step 4: Simplify right side
    113,716.92x = 12,497,519,785.00
  5. Step 5: Solve for x
    x = 12,497,519,785.00/113,716.92
  6. Step 6: Final answer
    x = 109,900.27

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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.