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Finding the Fourth Proportional to 3,370.78, 5,059.68 and 2,983.42

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Solution

The fourth proportional to 3,370.78, 5,059.68 and 2,983.42 is: 4,478.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,370.78 : 5,059.68 = 2,983.42 : x
  2. Step 2: Convert to fraction form
    3,370.78/5,059.68 = 2,983.42/x
  3. Step 3: Cross multiply
    3,370.78x = 5,059.68 × 2,983.42
  4. Step 4: Simplify right side
    3,370.78x = 15,095,150.51
  5. Step 5: Solve for x
    x = 15,095,150.51/3,370.78
  6. Step 6: Final answer
    x = 4,478.24

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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.