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Finding the Fourth Proportional to 70,428.52, 105,571.68 and 44,151.72

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Solution

The fourth proportional to 70,428.52, 105,571.68 and 44,151.72 is: 66,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428.52 : 105,571.68 = 44,151.72 : x
  2. Step 2: Convert to fraction form
    70,428.52/105,571.68 = 44,151.72/x
  3. Step 3: Cross multiply
    70,428.52x = 105,571.68 × 44,151.72
  4. Step 4: Simplify right side
    70,428.52x = 4,661,171,255.29
  5. Step 5: Solve for x
    x = 4,661,171,255.29/70,428.52
  6. Step 6: Final answer
    x = 66,183.01

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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.