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Finding the Fourth Proportional to 118,979.96, 164,189.52 and 65,264.49

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Solution

The fourth proportional to 118,979.96, 164,189.52 and 65,264.49 is: 90,063.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.96 : 164,189.52 = 65,264.49 : x
  2. Step 2: Convert to fraction form
    118,979.96/164,189.52 = 65,264.49/x
  3. Step 3: Cross multiply
    118,979.96x = 164,189.52 × 65,264.49
  4. Step 4: Simplify right side
    118,979.96x = 10,715,745,286.14
  5. Step 5: Solve for x
    x = 10,715,745,286.14/118,979.96
  6. Step 6: Final answer
    x = 90,063.45

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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.