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Finding the Fourth Proportional to 172, 237.52 and 126.24

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Solution

The fourth proportional to 172, 237.52 and 126.24 is: 174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172 : 237.52 = 126.24 : x
  2. Step 2: Convert to fraction form
    172/237.52 = 126.24/x
  3. Step 3: Cross multiply
    172x = 237.52 × 126.24
  4. Step 4: Simplify right side
    172x = 29,984.52
  5. Step 5: Solve for x
    x = 29,984.52/172
  6. Step 6: Final answer
    x = 174.33

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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.