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Finding the Fourth Proportional to 105,791.56, 158,686.66 and 26,905.11

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Solution

The fourth proportional to 105,791.56, 158,686.66 and 26,905.11 is: 40,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,791.56 : 158,686.66 = 26,905.11 : x
  2. Step 2: Convert to fraction form
    105,791.56/158,686.66 = 26,905.11/x
  3. Step 3: Cross multiply
    105,791.56x = 158,686.66 × 26,905.11
  4. Step 4: Simplify right side
    105,791.56x = 4,269,481,114.87
  5. Step 5: Solve for x
    x = 4,269,481,114.87/105,791.56
  6. Step 6: Final answer
    x = 40,357.48

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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.