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Finding the Third Proportional to 0.74 and 1.11

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Solution

The third proportional to 0.74 and 1.11 is: 1.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.74 : 1.11 = 1.11 : x
  2. Step 2: Convert to fraction form
    0.74/1.11 = 1.11/x
  3. Step 3: Cross multiply
    0.74x = 1.11 × 1.11
  4. Step 4: Simplify right side
    0.74x = 1.23
  5. Step 5: Solve for x
    x = 1.23/0.74
  6. Step 6: Final answer
    x = 1.66

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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.