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Finding the Fourth Proportional to 11,859.64, 16,364.63 and 6,821.94

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Solution

The fourth proportional to 11,859.64, 16,364.63 and 6,821.94 is: 9,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.64 : 16,364.63 = 6,821.94 : x
  2. Step 2: Convert to fraction form
    11,859.64/16,364.63 = 6,821.94/x
  3. Step 3: Cross multiply
    11,859.64x = 16,364.63 × 6,821.94
  4. Step 4: Simplify right side
    11,859.64x = 111,638,523.98
  5. Step 5: Solve for x
    x = 111,638,523.98/11,859.64
  6. Step 6: Final answer
    x = 9,413.31

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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.