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Finding the Fourth Proportional to 2,716.36, 4,072.02 and 984.60

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Solution

The fourth proportional to 2,716.36, 4,072.02 and 984.60 is: 1,475.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.36 : 4,072.02 = 984.60 : x
  2. Step 2: Convert to fraction form
    2,716.36/4,072.02 = 984.60/x
  3. Step 3: Cross multiply
    2,716.36x = 4,072.02 × 984.60
  4. Step 4: Simplify right side
    2,716.36x = 4,009,310.89
  5. Step 5: Solve for x
    x = 4,009,310.89/2,716.36
  6. Step 6: Final answer
    x = 1,475.99

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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.