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Finding the Fourth Proportional to 15.96, 22 and 12.07

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Solution

The fourth proportional to 15.96, 22 and 12.07 is: 16.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.96 : 22 = 12.07 : x
  2. Step 2: Convert to fraction form
    15.96/22 = 12.07/x
  3. Step 3: Cross multiply
    15.96x = 22 × 12.07
  4. Step 4: Simplify right side
    15.96x = 265.54
  5. Step 5: Solve for x
    x = 265.54/15.96
  6. Step 6: Final answer
    x = 16.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.