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Finding the Fourth Proportional to 19,364.20, 29,020.76 and 7,671.04

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Solution

The fourth proportional to 19,364.20, 29,020.76 and 7,671.04 is: 11,496.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.20 : 29,020.76 = 7,671.04 : x
  2. Step 2: Convert to fraction form
    19,364.20/29,020.76 = 7,671.04/x
  3. Step 3: Cross multiply
    19,364.20x = 29,020.76 × 7,671.04
  4. Step 4: Simplify right side
    19,364.20x = 222,619,410.79
  5. Step 5: Solve for x
    x = 222,619,410.79/19,364.20
  6. Step 6: Final answer
    x = 11,496.44

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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.