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Finding the Fourth Proportional to 192.24, 264.60 and 159.12

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Solution

The fourth proportional to 192.24, 264.60 and 159.12 is: 219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.24 : 264.60 = 159.12 : x
  2. Step 2: Convert to fraction form
    192.24/264.60 = 159.12/x
  3. Step 3: Cross multiply
    192.24x = 264.60 × 159.12
  4. Step 4: Simplify right side
    192.24x = 42,103.15
  5. Step 5: Solve for x
    x = 42,103.15/192.24
  6. Step 6: Final answer
    x = 219.01

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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.