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Finding the Fourth Proportional to 178.48, 267.56 and 178

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Solution

The fourth proportional to 178.48, 267.56 and 178 is: 266.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.48 : 267.56 = 178 : x
  2. Step 2: Convert to fraction form
    178.48/267.56 = 178/x
  3. Step 3: Cross multiply
    178.48x = 267.56 × 178
  4. Step 4: Simplify right side
    178.48x = 47,625.68
  5. Step 5: Solve for x
    x = 47,625.68/178.48
  6. Step 6: Final answer
    x = 266.84

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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.