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Finding the Fourth Proportional to 118,694.72, 178,042.44 and 48,561.68

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Solution

The fourth proportional to 118,694.72, 178,042.44 and 48,561.68 is: 72,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,694.72 : 178,042.44 = 48,561.68 : x
  2. Step 2: Convert to fraction form
    118,694.72/178,042.44 = 48,561.68/x
  3. Step 3: Cross multiply
    118,694.72x = 178,042.44 × 48,561.68
  4. Step 4: Simplify right side
    118,694.72x = 8,646,039,997.70
  5. Step 5: Solve for x
    x = 8,646,039,997.70/118,694.72
  6. Step 6: Final answer
    x = 72,842.67

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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.