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Finding the Fourth Proportional to 18,692.60, 28,040.41 and 5,544.93

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Solution

The fourth proportional to 18,692.60, 28,040.41 and 5,544.93 is: 8,317.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.60 : 28,040.41 = 5,544.93 : x
  2. Step 2: Convert to fraction form
    18,692.60/28,040.41 = 5,544.93/x
  3. Step 3: Cross multiply
    18,692.60x = 28,040.41 × 5,544.93
  4. Step 4: Simplify right side
    18,692.60x = 155,482,110.62
  5. Step 5: Solve for x
    x = 155,482,110.62/18,692.60
  6. Step 6: Final answer
    x = 8,317.84

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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.