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Finding the Third Proportional to 0.07 and 0.38

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Solution

The third proportional to 0.07 and 0.38 is: 2

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.07 : 0.38 = 0.38 : x
  2. Step 2: Convert to fraction form
    0.07/0.38 = 0.38/x
  3. Step 3: Cross multiply
    0.07x = 0.38 × 0.38
  4. Step 4: Simplify right side
    0.07x = 0.14
  5. Step 5: Solve for x
    x = 0.14/0.07
  6. Step 6: Final answer
    x = 2

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Why These Related Problems?

These problems maintain the same ratio (5.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.