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Finding the Fourth Proportional to 7,999.82, 12,002.43 and 5,040.48

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Solution

The fourth proportional to 7,999.82, 12,002.43 and 5,040.48 is: 7,562.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.82 : 12,002.43 = 5,040.48 : x
  2. Step 2: Convert to fraction form
    7,999.82/12,002.43 = 5,040.48/x
  3. Step 3: Cross multiply
    7,999.82x = 12,002.43 × 5,040.48
  4. Step 4: Simplify right side
    7,999.82x = 60,497,983.16
  5. Step 5: Solve for x
    x = 60,497,983.16/7,999.82
  6. Step 6: Final answer
    x = 7,562.42

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1.5x scale

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.