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Finding the Fourth Proportional to 19,293.39, 28,940.02 and 12,671.67

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Solution

The fourth proportional to 19,293.39, 28,940.02 and 12,671.67 is: 19,007.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.39 : 28,940.02 = 12,671.67 : x
  2. Step 2: Convert to fraction form
    19,293.39/28,940.02 = 12,671.67/x
  3. Step 3: Cross multiply
    19,293.39x = 28,940.02 × 12,671.67
  4. Step 4: Simplify right side
    19,293.39x = 366,718,460.08
  5. Step 5: Solve for x
    x = 366,718,460.08/19,293.39
  6. Step 6: Final answer
    x = 19,007.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.