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Finding the Fourth Proportional to 4,869.92, 7,290.81 and 3,015.43

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Solution

The fourth proportional to 4,869.92, 7,290.81 and 3,015.43 is: 4,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.92 : 7,290.81 = 3,015.43 : x
  2. Step 2: Convert to fraction form
    4,869.92/7,290.81 = 3,015.43/x
  3. Step 3: Cross multiply
    4,869.92x = 7,290.81 × 3,015.43
  4. Step 4: Simplify right side
    4,869.92x = 21,984,908.97
  5. Step 5: Solve for x
    x = 21,984,908.97/4,869.92
  6. Step 6: Final answer
    x = 4,514.43

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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.