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Finding the Third Proportional to 0.61 and 1.67

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Solution

The third proportional to 0.61 and 1.67 is: 4.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.61 : 1.67 = 1.67 : x
  2. Step 2: Convert to fraction form
    0.61/1.67 = 1.67/x
  3. Step 3: Cross multiply
    0.61x = 1.67 × 1.67
  4. Step 4: Simplify right side
    0.61x = 2.80
  5. Step 5: Solve for x
    x = 2.80/0.61
  6. Step 6: Final answer
    x = 4.60

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Why These Related Problems?

These problems maintain the same ratio (2.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.