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Finding the Fourth Proportional to 4,649.76, 6,968.16 and 3,185.28

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Solution

The fourth proportional to 4,649.76, 6,968.16 and 3,185.28 is: 4,773.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,649.76 : 6,968.16 = 3,185.28 : x
  2. Step 2: Convert to fraction form
    4,649.76/6,968.16 = 3,185.28/x
  3. Step 3: Cross multiply
    4,649.76x = 6,968.16 × 3,185.28
  4. Step 4: Simplify right side
    4,649.76x = 22,195,540.68
  5. Step 5: Solve for x
    x = 22,195,540.68/4,649.76
  6. Step 6: Final answer
    x = 4,773.48

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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.