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Finding the Fourth Proportional to 118,909.75, 164,095.46 and 68,608.75

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Solution

The fourth proportional to 118,909.75, 164,095.46 and 68,608.75 is: 94,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,909.75 : 164,095.46 = 68,608.75 : x
  2. Step 2: Convert to fraction form
    118,909.75/164,095.46 = 68,608.75/x
  3. Step 3: Cross multiply
    118,909.75x = 164,095.46 × 68,608.75
  4. Step 4: Simplify right side
    118,909.75x = 11,258,384,391.28
  5. Step 5: Solve for x
    x = 11,258,384,391.28/118,909.75
  6. Step 6: Final answer
    x = 94,680.08

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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.