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Finding the Fourth Proportional to 43,991.06, 65,986.02 and 10,711.15

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Solution

The fourth proportional to 43,991.06, 65,986.02 and 10,711.15 is: 16,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,991.06 : 65,986.02 = 10,711.15 : x
  2. Step 2: Convert to fraction form
    43,991.06/65,986.02 = 10,711.15/x
  3. Step 3: Cross multiply
    43,991.06x = 65,986.02 × 10,711.15
  4. Step 4: Simplify right side
    43,991.06x = 706,785,993.16
  5. Step 5: Solve for x
    x = 706,785,993.16/43,991.06
  6. Step 6: Final answer
    x = 16,066.58

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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.