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Finding the Fourth Proportional to 7,367.84, 10,171.37 and 4,990.37

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Solution

The fourth proportional to 7,367.84, 10,171.37 and 4,990.37 is: 6,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,367.84 : 10,171.37 = 4,990.37 : x
  2. Step 2: Convert to fraction form
    7,367.84/10,171.37 = 4,990.37/x
  3. Step 3: Cross multiply
    7,367.84x = 10,171.37 × 4,990.37
  4. Step 4: Simplify right side
    7,367.84x = 50,758,823.90
  5. Step 5: Solve for x
    x = 50,758,823.90/7,367.84
  6. Step 6: Final answer
    x = 6,889.25

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1.5x scale

Why These Related Problems?

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