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Finding the Fourth Proportional to 44.76, 61.44 and 44.64

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Solution

The fourth proportional to 44.76, 61.44 and 44.64 is: 61.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.76 : 61.44 = 44.64 : x
  2. Step 2: Convert to fraction form
    44.76/61.44 = 44.64/x
  3. Step 3: Cross multiply
    44.76x = 61.44 × 44.64
  4. Step 4: Simplify right side
    44.76x = 2,742.68
  5. Step 5: Solve for x
    x = 2,742.68/44.76
  6. Step 6: Final answer
    x = 61.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.