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Finding the Fourth Proportional to 163, 224.94 and 94

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Solution

The fourth proportional to 163, 224.94 and 94 is: 129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    163 : 224.94 = 94 : x
  2. Step 2: Convert to fraction form
    163/224.94 = 94/x
  3. Step 3: Cross multiply
    163x = 224.94 × 94
  4. Step 4: Simplify right side
    163x = 21,144.36
  5. Step 5: Solve for x
    x = 21,144.36/163
  6. Step 6: Final answer
    x = 129.72

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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.