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Finding the Fourth Proportional to 3,727.75, 5,591.49 and 954.40

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Solution

The fourth proportional to 3,727.75, 5,591.49 and 954.40 is: 1,431.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.75 : 5,591.49 = 954.40 : x
  2. Step 2: Convert to fraction form
    3,727.75/5,591.49 = 954.40/x
  3. Step 3: Cross multiply
    3,727.75x = 5,591.49 × 954.40
  4. Step 4: Simplify right side
    3,727.75x = 5,336,518.06
  5. Step 5: Solve for x
    x = 5,336,518.06/3,727.75
  6. Step 6: Final answer
    x = 1,431.57

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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.