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Finding the Fourth Proportional to 3,351.81, 5,028.11 and 886.65

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Solution

The fourth proportional to 3,351.81, 5,028.11 and 886.65 is: 1,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,351.81 : 5,028.11 = 886.65 : x
  2. Step 2: Convert to fraction form
    3,351.81/5,028.11 = 886.65/x
  3. Step 3: Cross multiply
    3,351.81x = 5,028.11 × 886.65
  4. Step 4: Simplify right side
    3,351.81x = 4,458,173.73
  5. Step 5: Solve for x
    x = 4,458,173.73/3,351.81
  6. Step 6: Final answer
    x = 1,330.08

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1.5x scale

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.