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Finding the Fourth Proportional to 22.65, 31.02 and 22.59

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Solution

The fourth proportional to 22.65, 31.02 and 22.59 is: 30.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.65 : 31.02 = 22.59 : x
  2. Step 2: Convert to fraction form
    22.65/31.02 = 22.59/x
  3. Step 3: Cross multiply
    22.65x = 31.02 × 22.59
  4. Step 4: Simplify right side
    22.65x = 700.74
  5. Step 5: Solve for x
    x = 700.74/22.65
  6. Step 6: Final answer
    x = 30.94

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.