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Finding the Fourth Proportional to 8,474.68, 12,694.74 and 3,542.32

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Solution

The fourth proportional to 8,474.68, 12,694.74 and 3,542.32 is: 5,306.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.68 : 12,694.74 = 3,542.32 : x
  2. Step 2: Convert to fraction form
    8,474.68/12,694.74 = 3,542.32/x
  3. Step 3: Cross multiply
    8,474.68x = 12,694.74 × 3,542.32
  4. Step 4: Simplify right side
    8,474.68x = 44,968,831.40
  5. Step 5: Solve for x
    x = 44,968,831.40/8,474.68
  6. Step 6: Final answer
    x = 5,306.26

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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.