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Finding the Fourth Proportional to 164.50, 246.58 and 61.86

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Solution

The fourth proportional to 164.50, 246.58 and 61.86 is: 92.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.50 : 246.58 = 61.86 : x
  2. Step 2: Convert to fraction form
    164.50/246.58 = 61.86/x
  3. Step 3: Cross multiply
    164.50x = 246.58 × 61.86
  4. Step 4: Simplify right side
    164.50x = 15,253.44
  5. Step 5: Solve for x
    x = 15,253.44/164.50
  6. Step 6: Final answer
    x = 92.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.