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Finding the Fourth Proportional to 7,413.78, 10,213.44 and 5,171.58

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Solution

The fourth proportional to 7,413.78, 10,213.44 and 5,171.58 is: 7,124.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,413.78 : 10,213.44 = 5,171.58 : x
  2. Step 2: Convert to fraction form
    7,413.78/10,213.44 = 5,171.58/x
  3. Step 3: Cross multiply
    7,413.78x = 10,213.44 × 5,171.58
  4. Step 4: Simplify right side
    7,413.78x = 52,819,622.04
  5. Step 5: Solve for x
    x = 52,819,622.04/7,413.78
  6. Step 6: Final answer
    x = 7,124.52

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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.