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Finding the Fourth Proportional to 3,669.85, 5,150.75 and 3,669.85

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Solution

The fourth proportional to 3,669.85, 5,150.75 and 3,669.85 is: 5,150.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.85 : 5,150.75 = 3,669.85 : x
  2. Step 2: Convert to fraction form
    3,669.85/5,150.75 = 3,669.85/x
  3. Step 3: Cross multiply
    3,669.85x = 5,150.75 × 3,669.85
  4. Step 4: Simplify right side
    3,669.85x = 18,902,479.89
  5. Step 5: Solve for x
    x = 18,902,479.89/3,669.85
  6. Step 6: Final answer
    x = 5,150.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.