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Finding the Fourth Proportional to 3,471.52, 5,207.30 and 874.46

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Solution

The fourth proportional to 3,471.52, 5,207.30 and 874.46 is: 1,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.52 : 5,207.30 = 874.46 : x
  2. Step 2: Convert to fraction form
    3,471.52/5,207.30 = 874.46/x
  3. Step 3: Cross multiply
    3,471.52x = 5,207.30 × 874.46
  4. Step 4: Simplify right side
    3,471.52x = 4,553,551.71
  5. Step 5: Solve for x
    x = 4,553,551.71/3,471.52
  6. Step 6: Final answer
    x = 1,311.69

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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.