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Finding the Fourth Proportional to 192.24, 288.08 and 141

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Solution

The fourth proportional to 192.24, 288.08 and 141 is: 211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.24 : 288.08 = 141 : x
  2. Step 2: Convert to fraction form
    192.24/288.08 = 141/x
  3. Step 3: Cross multiply
    192.24x = 288.08 × 141
  4. Step 4: Simplify right side
    192.24x = 40,618.58
  5. Step 5: Solve for x
    x = 40,618.58/192.24
  6. Step 6: Final answer
    x = 211.29

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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.