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Finding the Fourth Proportional to 33.35, 46 and 21.06

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Solution

The fourth proportional to 33.35, 46 and 21.06 is: 29.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.35 : 46 = 21.06 : x
  2. Step 2: Convert to fraction form
    33.35/46 = 21.06/x
  3. Step 3: Cross multiply
    33.35x = 46 × 21.06
  4. Step 4: Simplify right side
    33.35x = 968.88
  5. Step 5: Solve for x
    x = 968.88/33.35
  6. Step 6: Final answer
    x = 29.05

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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.