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Finding the Fourth Proportional to 111,077.81, 166,619.90 and 43,607.05

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Solution

The fourth proportional to 111,077.81, 166,619.90 and 43,607.05 is: 65,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,077.81 : 166,619.90 = 43,607.05 : x
  2. Step 2: Convert to fraction form
    111,077.81/166,619.90 = 43,607.05/x
  3. Step 3: Cross multiply
    111,077.81x = 166,619.90 × 43,607.05
  4. Step 4: Simplify right side
    111,077.81x = 7,265,802,310.30
  5. Step 5: Solve for x
    x = 7,265,802,310.30/111,077.81
  6. Step 6: Final answer
    x = 65,411.83

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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.