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Finding the Fourth Proportional to 32.99, 45.45 and 25.22

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Solution

The fourth proportional to 32.99, 45.45 and 25.22 is: 34.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.99 : 45.45 = 25.22 : x
  2. Step 2: Convert to fraction form
    32.99/45.45 = 25.22/x
  3. Step 3: Cross multiply
    32.99x = 45.45 × 25.22
  4. Step 4: Simplify right side
    32.99x = 1,146.36
  5. Step 5: Solve for x
    x = 1,146.36/32.99
  6. Step 6: Final answer
    x = 34.75

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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.