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Finding the Fourth Proportional to 7,792.74, 10,745.80 and 5,136.75

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Solution

The fourth proportional to 7,792.74, 10,745.80 and 5,136.75 is: 7,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.74 : 10,745.80 = 5,136.75 : x
  2. Step 2: Convert to fraction form
    7,792.74/10,745.80 = 5,136.75/x
  3. Step 3: Cross multiply
    7,792.74x = 10,745.80 × 5,136.75
  4. Step 4: Simplify right side
    7,792.74x = 55,198,475.31
  5. Step 5: Solve for x
    x = 55,198,475.31/7,792.74
  6. Step 6: Final answer
    x = 7,083.32

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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.