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Finding the Fourth Proportional to 7,282.81, 10,919.15 and 3,718.01

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Solution

The fourth proportional to 7,282.81, 10,919.15 and 3,718.01 is: 5,574.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,282.81 : 10,919.15 = 3,718.01 : x
  2. Step 2: Convert to fraction form
    7,282.81/10,919.15 = 3,718.01/x
  3. Step 3: Cross multiply
    7,282.81x = 10,919.15 × 3,718.01
  4. Step 4: Simplify right side
    7,282.81x = 40,597,531.54
  5. Step 5: Solve for x
    x = 40,597,531.54/7,282.81
  6. Step 6: Final answer
    x = 5,574.43

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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.