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Finding the Fourth Proportional to 7,863.99, 11,792.32 and 4,578.02

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Solution

The fourth proportional to 7,863.99, 11,792.32 and 4,578.02 is: 6,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.99 : 11,792.32 = 4,578.02 : x
  2. Step 2: Convert to fraction form
    7,863.99/11,792.32 = 4,578.02/x
  3. Step 3: Cross multiply
    7,863.99x = 11,792.32 × 4,578.02
  4. Step 4: Simplify right side
    7,863.99x = 53,985,450.62
  5. Step 5: Solve for x
    x = 53,985,450.62/7,863.99
  6. Step 6: Final answer
    x = 6,864.90

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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.