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Finding the Fourth Proportional to 18,698.98, 28,043.67 and 5,548.26

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Solution

The fourth proportional to 18,698.98, 28,043.67 and 5,548.26 is: 8,320.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.98 : 28,043.67 = 5,548.26 : x
  2. Step 2: Convert to fraction form
    18,698.98/28,043.67 = 5,548.26/x
  3. Step 3: Cross multiply
    18,698.98x = 28,043.67 × 5,548.26
  4. Step 4: Simplify right side
    18,698.98x = 155,593,572.51
  5. Step 5: Solve for x
    x = 155,593,572.51/18,698.98
  6. Step 6: Final answer
    x = 8,320.97

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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.