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Finding the Fourth Proportional to 178.48, 266 and 174.88

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Solution

The fourth proportional to 178.48, 266 and 174.88 is: 260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.48 : 266 = 174.88 : x
  2. Step 2: Convert to fraction form
    178.48/266 = 174.88/x
  3. Step 3: Cross multiply
    178.48x = 266 × 174.88
  4. Step 4: Simplify right side
    178.48x = 46,518.08
  5. Step 5: Solve for x
    x = 46,518.08/178.48
  6. Step 6: Final answer
    x = 260.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.