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Finding the Fourth Proportional to 30,951.72, 42,713.46 and 16,804.62

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Solution

The fourth proportional to 30,951.72, 42,713.46 and 16,804.62 is: 23,190.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,951.72 : 42,713.46 = 16,804.62 : x
  2. Step 2: Convert to fraction form
    30,951.72/42,713.46 = 16,804.62/x
  3. Step 3: Cross multiply
    30,951.72x = 42,713.46 × 16,804.62
  4. Step 4: Simplify right side
    30,951.72x = 717,783,464.19
  5. Step 5: Solve for x
    x = 717,783,464.19/30,951.72
  6. Step 6: Final answer
    x = 23,190.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.