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Finding the Fourth Proportional to 3,859.97, 5,792.32 and 1,668.65

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Solution

The fourth proportional to 3,859.97, 5,792.32 and 1,668.65 is: 2,504.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.97 : 5,792.32 = 1,668.65 : x
  2. Step 2: Convert to fraction form
    3,859.97/5,792.32 = 1,668.65/x
  3. Step 3: Cross multiply
    3,859.97x = 5,792.32 × 1,668.65
  4. Step 4: Simplify right side
    3,859.97x = 9,665,354.77
  5. Step 5: Solve for x
    x = 9,665,354.77/3,859.97
  6. Step 6: Final answer
    x = 2,504.00

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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.