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Finding the Fourth Proportional to 5,318.32, 7,970.44 and 4,081

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Solution

The fourth proportional to 5,318.32, 7,970.44 and 4,081 is: 6,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.32 : 7,970.44 = 4,081 : x
  2. Step 2: Convert to fraction form
    5,318.32/7,970.44 = 4,081/x
  3. Step 3: Cross multiply
    5,318.32x = 7,970.44 × 4,081
  4. Step 4: Simplify right side
    5,318.32x = 32,527,365.64
  5. Step 5: Solve for x
    x = 32,527,365.64/5,318.32
  6. Step 6: Final answer
    x = 6,116.10

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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.