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Finding the Fourth Proportional to 22,956.80, 34,435.20 and 12,563.20

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Solution

The fourth proportional to 22,956.80, 34,435.20 and 12,563.20 is: 18,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,956.80 : 34,435.20 = 12,563.20 : x
  2. Step 2: Convert to fraction form
    22,956.80/34,435.20 = 12,563.20/x
  3. Step 3: Cross multiply
    22,956.80x = 34,435.20 × 12,563.20
  4. Step 4: Simplify right side
    22,956.80x = 432,616,304.64
  5. Step 5: Solve for x
    x = 432,616,304.64/22,956.80
  6. Step 6: Final answer
    x = 18,844.80

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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.