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Finding the Fourth Proportional to 93.92, 140.94 and 93.56

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Solution

The fourth proportional to 93.92, 140.94 and 93.56 is: 140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.92 : 140.94 = 93.56 : x
  2. Step 2: Convert to fraction form
    93.92/140.94 = 93.56/x
  3. Step 3: Cross multiply
    93.92x = 140.94 × 93.56
  4. Step 4: Simplify right side
    93.92x = 13,186.35
  5. Step 5: Solve for x
    x = 13,186.35/93.92
  6. Step 6: Final answer
    x = 140.40

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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.