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Finding the Fourth Proportional to 6.24, 9.36 and 5.58

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Solution

The fourth proportional to 6.24, 9.36 and 5.58 is: 8.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.24 : 9.36 = 5.58 : x
  2. Step 2: Convert to fraction form
    6.24/9.36 = 5.58/x
  3. Step 3: Cross multiply
    6.24x = 9.36 × 5.58
  4. Step 4: Simplify right side
    6.24x = 52.23
  5. Step 5: Solve for x
    x = 52.23/6.24
  6. Step 6: Final answer
    x = 8.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.