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Finding the Fourth Proportional to 168,073, 231,940.74 and 92,621.50

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Solution

The fourth proportional to 168,073, 231,940.74 and 92,621.50 is: 127,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,073 : 231,940.74 = 92,621.50 : x
  2. Step 2: Convert to fraction form
    168,073/231,940.74 = 92,621.50/x
  3. Step 3: Cross multiply
    168,073x = 231,940.74 × 92,621.50
  4. Step 4: Simplify right side
    168,073x = 21,482,699,249.91
  5. Step 5: Solve for x
    x = 21,482,699,249.91/168,073
  6. Step 6: Final answer
    x = 127,817.67

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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.