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Finding the Fourth Proportional to 111,077.31, 166,619.15 and 43,606.55

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Solution

The fourth proportional to 111,077.31, 166,619.15 and 43,606.55 is: 65,411.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,077.31 : 166,619.15 = 43,606.55 : x
  2. Step 2: Convert to fraction form
    111,077.31/166,619.15 = 43,606.55/x
  3. Step 3: Cross multiply
    111,077.31x = 166,619.15 × 43,606.55
  4. Step 4: Simplify right side
    111,077.31x = 7,265,685,244.30
  5. Step 5: Solve for x
    x = 7,265,685,244.30/111,077.31
  6. Step 6: Final answer
    x = 65,411.07

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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.