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Finding the Fourth Proportional to 10.95, 16.47 and 9.63

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Solution

The fourth proportional to 10.95, 16.47 and 9.63 is: 14.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.95 : 16.47 = 9.63 : x
  2. Step 2: Convert to fraction form
    10.95/16.47 = 9.63/x
  3. Step 3: Cross multiply
    10.95x = 16.47 × 9.63
  4. Step 4: Simplify right side
    10.95x = 158.61
  5. Step 5: Solve for x
    x = 158.61/10.95
  6. Step 6: Final answer
    x = 14.48

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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.