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Finding the Fourth Proportional to 13,039.69, 19,560.54 and 4,275.49

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Solution

The fourth proportional to 13,039.69, 19,560.54 and 4,275.49 is: 6,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.69 : 19,560.54 = 4,275.49 : x
  2. Step 2: Convert to fraction form
    13,039.69/19,560.54 = 4,275.49/x
  3. Step 3: Cross multiply
    13,039.69x = 19,560.54 × 4,275.49
  4. Step 4: Simplify right side
    13,039.69x = 83,630,893.16
  5. Step 5: Solve for x
    x = 83,630,893.16/13,039.69
  6. Step 6: Final answer
    x = 6,413.56

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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.