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Finding the Fourth Proportional to 68,953.20, 103,429.80 and 24,581.40

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Solution

The fourth proportional to 68,953.20, 103,429.80 and 24,581.40 is: 36,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,953.20 : 103,429.80 = 24,581.40 : x
  2. Step 2: Convert to fraction form
    68,953.20/103,429.80 = 24,581.40/x
  3. Step 3: Cross multiply
    68,953.20x = 103,429.80 × 24,581.40
  4. Step 4: Simplify right side
    68,953.20x = 2,542,449,285.72
  5. Step 5: Solve for x
    x = 2,542,449,285.72/68,953.20
  6. Step 6: Final answer
    x = 36,872.10

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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.