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Finding the Fourth Proportional to 93,662.72, 129,311.36 and 61,884.80

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Solution

The fourth proportional to 93,662.72, 129,311.36 and 61,884.80 is: 85,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,662.72 : 129,311.36 = 61,884.80 : x
  2. Step 2: Convert to fraction form
    93,662.72/129,311.36 = 61,884.80/x
  3. Step 3: Cross multiply
    93,662.72x = 129,311.36 × 61,884.80
  4. Step 4: Simplify right side
    93,662.72x = 8,002,407,651.33
  5. Step 5: Solve for x
    x = 8,002,407,651.33/93,662.72
  6. Step 6: Final answer
    x = 85,438.56

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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.