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Finding the Fourth Proportional to 9,143.77, 13,687.83 and 5,859.19

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Solution

The fourth proportional to 9,143.77, 13,687.83 and 5,859.19 is: 8,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.77 : 13,687.83 = 5,859.19 : x
  2. Step 2: Convert to fraction form
    9,143.77/13,687.83 = 5,859.19/x
  3. Step 3: Cross multiply
    9,143.77x = 13,687.83 × 5,859.19
  4. Step 4: Simplify right side
    9,143.77x = 80,199,596.66
  5. Step 5: Solve for x
    x = 80,199,596.66/9,143.77
  6. Step 6: Final answer
    x = 8,770.96

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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.