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Finding the Fourth Proportional to 118,794.55, 163,939.41 and 65,079.70

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Solution

The fourth proportional to 118,794.55, 163,939.41 and 65,079.70 is: 89,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.55 : 163,939.41 = 65,079.70 : x
  2. Step 2: Convert to fraction form
    118,794.55/163,939.41 = 65,079.70/x
  3. Step 3: Cross multiply
    118,794.55x = 163,939.41 × 65,079.70
  4. Step 4: Simplify right side
    118,794.55x = 10,669,127,620.98
  5. Step 5: Solve for x
    x = 10,669,127,620.98/118,794.55
  6. Step 6: Final answer
    x = 89,811.59

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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.