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Finding the Fourth Proportional to 116.16, 160.28 and 67

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Solution

The fourth proportional to 116.16, 160.28 and 67 is: 92.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.16 : 160.28 = 67 : x
  2. Step 2: Convert to fraction form
    116.16/160.28 = 67/x
  3. Step 3: Cross multiply
    116.16x = 160.28 × 67
  4. Step 4: Simplify right side
    116.16x = 10,738.76
  5. Step 5: Solve for x
    x = 10,738.76/116.16
  6. Step 6: Final answer
    x = 92.45

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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.