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Finding the Fourth Proportional to 188.45, 260.32 and 170.99

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Solution

The fourth proportional to 188.45, 260.32 and 170.99 is: 236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.45 : 260.32 = 170.99 : x
  2. Step 2: Convert to fraction form
    188.45/260.32 = 170.99/x
  3. Step 3: Cross multiply
    188.45x = 260.32 × 170.99
  4. Step 4: Simplify right side
    188.45x = 44,512.01
  5. Step 5: Solve for x
    x = 44,512.01/188.45
  6. Step 6: Final answer
    x = 236.20

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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.