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Finding the Fourth Proportional to 49,157.76, 73,736.90 and 12,221.76

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Solution

The fourth proportional to 49,157.76, 73,736.90 and 12,221.76 is: 18,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,157.76 : 73,736.90 = 12,221.76 : x
  2. Step 2: Convert to fraction form
    49,157.76/73,736.90 = 12,221.76/x
  3. Step 3: Cross multiply
    49,157.76x = 73,736.90 × 12,221.76
  4. Step 4: Simplify right side
    49,157.76x = 901,194,694.94
  5. Step 5: Solve for x
    x = 901,194,694.94/49,157.76
  6. Step 6: Final answer
    x = 18,332.70

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1.5x scale

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.