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Finding the Fourth Proportional to 5,441.75, 8,121.51 and 4,916.87

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Solution

The fourth proportional to 5,441.75, 8,121.51 and 4,916.87 is: 7,338.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,441.75 : 8,121.51 = 4,916.87 : x
  2. Step 2: Convert to fraction form
    5,441.75/8,121.51 = 4,916.87/x
  3. Step 3: Cross multiply
    5,441.75x = 8,121.51 × 4,916.87
  4. Step 4: Simplify right side
    5,441.75x = 39,932,408.87
  5. Step 5: Solve for x
    x = 39,932,408.87/5,441.75
  6. Step 6: Final answer
    x = 7,338.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.