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Finding the Fourth Proportional to 68,863.17, 103,277.74 and 18,940.85

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Solution

The fourth proportional to 68,863.17, 103,277.74 and 18,940.85 is: 28,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,863.17 : 103,277.74 = 18,940.85 : x
  2. Step 2: Convert to fraction form
    68,863.17/103,277.74 = 18,940.85/x
  3. Step 3: Cross multiply
    68,863.17x = 103,277.74 × 18,940.85
  4. Step 4: Simplify right side
    68,863.17x = 1,956,168,181.68
  5. Step 5: Solve for x
    x = 1,956,168,181.68/68,863.17
  6. Step 6: Final answer
    x = 28,406.60

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1.5x scale

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.