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Finding the Fourth Proportional to 7,995.21, 11,992.30 and 2,448.02

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Solution

The fourth proportional to 7,995.21, 11,992.30 and 2,448.02 is: 3,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.21 : 11,992.30 = 2,448.02 : x
  2. Step 2: Convert to fraction form
    7,995.21/11,992.30 = 2,448.02/x
  3. Step 3: Cross multiply
    7,995.21x = 11,992.30 × 2,448.02
  4. Step 4: Simplify right side
    7,995.21x = 29,357,390.25
  5. Step 5: Solve for x
    x = 29,357,390.25/7,995.21
  6. Step 6: Final answer
    x = 3,671.87

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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.