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Finding the Fourth Proportional to 5.37, 7.42 and 5.35

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Solution

The fourth proportional to 5.37, 7.42 and 5.35 is: 7.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.37 : 7.42 = 5.35 : x
  2. Step 2: Convert to fraction form
    5.37/7.42 = 5.35/x
  3. Step 3: Cross multiply
    5.37x = 7.42 × 5.35
  4. Step 4: Simplify right side
    5.37x = 39.70
  5. Step 5: Solve for x
    x = 39.70/5.37
  6. Step 6: Final answer
    x = 7.39

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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.