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Finding the Fourth Proportional to 117, 174.48 and 114.96

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Solution

The fourth proportional to 117, 174.48 and 114.96 is: 171.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117 : 174.48 = 114.96 : x
  2. Step 2: Convert to fraction form
    117/174.48 = 114.96/x
  3. Step 3: Cross multiply
    117x = 174.48 × 114.96
  4. Step 4: Simplify right side
    117x = 20,058.22
  5. Step 5: Solve for x
    x = 20,058.22/117
  6. Step 6: Final answer
    x = 171.44

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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.