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Finding the Fourth Proportional to 118,986.70, 164,206.20 and 65,273.98

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Solution

The fourth proportional to 118,986.70, 164,206.20 and 65,273.98 is: 90,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,986.70 : 164,206.20 = 65,273.98 : x
  2. Step 2: Convert to fraction form
    118,986.70/164,206.20 = 65,273.98/x
  3. Step 3: Cross multiply
    118,986.70x = 164,206.20 × 65,273.98
  4. Step 4: Simplify right side
    118,986.70x = 10,718,392,214.68
  5. Step 5: Solve for x
    x = 10,718,392,214.68/118,986.70
  6. Step 6: Final answer
    x = 90,080.59

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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.