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Finding the Fourth Proportional to 7,322.80, 10,984.20 and 2,392.60

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Solution

The fourth proportional to 7,322.80, 10,984.20 and 2,392.60 is: 3,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.80 : 10,984.20 = 2,392.60 : x
  2. Step 2: Convert to fraction form
    7,322.80/10,984.20 = 2,392.60/x
  3. Step 3: Cross multiply
    7,322.80x = 10,984.20 × 2,392.60
  4. Step 4: Simplify right side
    7,322.80x = 26,280,796.92
  5. Step 5: Solve for x
    x = 26,280,796.92/7,322.80
  6. Step 6: Final answer
    x = 3,588.90

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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.