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Finding the Fourth Proportional to 118,797.12, 163,933.14 and 65,072.79

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Solution

The fourth proportional to 118,797.12, 163,933.14 and 65,072.79 is: 89,796.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,797.12 : 163,933.14 = 65,072.79 : x
  2. Step 2: Convert to fraction form
    118,797.12/163,933.14 = 65,072.79/x
  3. Step 3: Cross multiply
    118,797.12x = 163,933.14 × 65,072.79
  4. Step 4: Simplify right side
    118,797.12x = 10,667,586,793.26
  5. Step 5: Solve for x
    x = 10,667,586,793.26/118,797.12
  6. Step 6: Final answer
    x = 89,796.68

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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.