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Finding the Fourth Proportional to 26,745.55, 36,900.50 and 15,413.50

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Solution

The fourth proportional to 26,745.55, 36,900.50 and 15,413.50 is: 21,265.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,745.55 : 36,900.50 = 15,413.50 : x
  2. Step 2: Convert to fraction form
    26,745.55/36,900.50 = 15,413.50/x
  3. Step 3: Cross multiply
    26,745.55x = 36,900.50 × 15,413.50
  4. Step 4: Simplify right side
    26,745.55x = 568,765,913.54
  5. Step 5: Solve for x
    x = 568,765,913.54/26,745.55
  6. Step 6: Final answer
    x = 21,265.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.