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Finding the Fourth Proportional to 118,467.75, 163,485.25 and 67,480.46

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Solution

The fourth proportional to 118,467.75, 163,485.25 and 67,480.46 is: 93,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,467.75 : 163,485.25 = 67,480.46 : x
  2. Step 2: Convert to fraction form
    118,467.75/163,485.25 = 67,480.46/x
  3. Step 3: Cross multiply
    118,467.75x = 163,485.25 × 67,480.46
  4. Step 4: Simplify right side
    118,467.75x = 11,032,059,821.36
  5. Step 5: Solve for x
    x = 11,032,059,821.36/118,467.75
  6. Step 6: Final answer
    x = 93,122.90

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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.