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Finding the Fourth Proportional to 39,413.56, 59,129.94 and 11,711.56

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Solution

The fourth proportional to 39,413.56, 59,129.94 and 11,711.56 is: 17,570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,413.56 : 59,129.94 = 11,711.56 : x
  2. Step 2: Convert to fraction form
    39,413.56/59,129.94 = 11,711.56/x
  3. Step 3: Cross multiply
    39,413.56x = 59,129.94 × 11,711.56
  4. Step 4: Simplify right side
    39,413.56x = 692,503,840.11
  5. Step 5: Solve for x
    x = 692,503,840.11/39,413.56
  6. Step 6: Final answer
    x = 17,570.19

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1.5x scale

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.