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Finding the Fourth Proportional to 13,348.19, 18,420.62 and 7,379.96

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Solution

The fourth proportional to 13,348.19, 18,420.62 and 7,379.96 is: 10,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.19 : 18,420.62 = 7,379.96 : x
  2. Step 2: Convert to fraction form
    13,348.19/18,420.62 = 7,379.96/x
  3. Step 3: Cross multiply
    13,348.19x = 18,420.62 × 7,379.96
  4. Step 4: Simplify right side
    13,348.19x = 135,943,413.39
  5. Step 5: Solve for x
    x = 135,943,413.39/13,348.19
  6. Step 6: Final answer
    x = 10,184.41

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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.