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Finding the Fourth Proportional to 118,947.75, 164,147.90 and 65,955.75

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Solution

The fourth proportional to 118,947.75, 164,147.90 and 65,955.75 is: 91,018.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,947.75 : 164,147.90 = 65,955.75 : x
  2. Step 2: Convert to fraction form
    118,947.75/164,147.90 = 65,955.75/x
  3. Step 3: Cross multiply
    118,947.75x = 164,147.90 × 65,955.75
  4. Step 4: Simplify right side
    118,947.75x = 10,826,497,525.65
  5. Step 5: Solve for x
    x = 10,826,497,525.65/118,947.75
  6. Step 6: Final answer
    x = 91,018.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.