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Finding the Fourth Proportional to 79,343.28, 109,491.84 and 43,532.96

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Solution

The fourth proportional to 79,343.28, 109,491.84 and 43,532.96 is: 60,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,343.28 : 109,491.84 = 43,532.96 : x
  2. Step 2: Convert to fraction form
    79,343.28/109,491.84 = 43,532.96/x
  3. Step 3: Cross multiply
    79,343.28x = 109,491.84 × 43,532.96
  4. Step 4: Simplify right side
    79,343.28x = 4,766,503,891.05
  5. Step 5: Solve for x
    x = 4,766,503,891.05/79,343.28
  6. Step 6: Final answer
    x = 60,074.45

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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.