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Finding the Fourth Proportional to 6,792.78, 9,374.42 and 3,809.57

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Solution

The fourth proportional to 6,792.78, 9,374.42 and 3,809.57 is: 5,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,792.78 : 9,374.42 = 3,809.57 : x
  2. Step 2: Convert to fraction form
    6,792.78/9,374.42 = 3,809.57/x
  3. Step 3: Cross multiply
    6,792.78x = 9,374.42 × 3,809.57
  4. Step 4: Simplify right side
    6,792.78x = 35,712,509.20
  5. Step 5: Solve for x
    x = 35,712,509.20/6,792.78
  6. Step 6: Final answer
    x = 5,257.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.