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Finding the Fourth Proportional to 92, 126.98 and 52.67

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Solution

The fourth proportional to 92, 126.98 and 52.67 is: 72.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92 : 126.98 = 52.67 : x
  2. Step 2: Convert to fraction form
    92/126.98 = 52.67/x
  3. Step 3: Cross multiply
    92x = 126.98 × 52.67
  4. Step 4: Simplify right side
    92x = 6,687.14
  5. Step 5: Solve for x
    x = 6,687.14/92
  6. Step 6: Final answer
    x = 72.69

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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.