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Finding the Fourth Proportional to 118,976.63, 164,187.74 and 68,675.63

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Solution

The fourth proportional to 118,976.63, 164,187.74 and 68,675.63 is: 94,772.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,976.63 : 164,187.74 = 68,675.63 : x
  2. Step 2: Convert to fraction form
    118,976.63/164,187.74 = 68,675.63/x
  3. Step 3: Cross multiply
    118,976.63x = 164,187.74 × 68,675.63
  4. Step 4: Simplify right side
    118,976.63x = 11,275,696,482.78
  5. Step 5: Solve for x
    x = 11,275,696,482.78/118,976.63
  6. Step 6: Final answer
    x = 94,772.36

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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.