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Finding the Third Proportional to 66.47 and 94.50

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Solution

The third proportional to 66.47 and 94.50 is: 134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.47 : 94.50 = 94.50 : x
  2. Step 2: Convert to fraction form
    66.47/94.50 = 94.50/x
  3. Step 3: Cross multiply
    66.47x = 94.50 × 94.50
  4. Step 4: Simplify right side
    66.47x = 8,930.25
  5. Step 5: Solve for x
    x = 8,930.25/66.47
  6. Step 6: Final answer
    x = 134.35

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.