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Finding the Fourth Proportional to 5,015.96, 6,924.16 and 3,128.48

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Solution

The fourth proportional to 5,015.96, 6,924.16 and 3,128.48 is: 4,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.96 : 6,924.16 = 3,128.48 : x
  2. Step 2: Convert to fraction form
    5,015.96/6,924.16 = 3,128.48/x
  3. Step 3: Cross multiply
    5,015.96x = 6,924.16 × 3,128.48
  4. Step 4: Simplify right side
    5,015.96x = 21,662,096.08
  5. Step 5: Solve for x
    x = 21,662,096.08/5,015.96
  6. Step 6: Final answer
    x = 4,318.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.