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Finding the Fourth Proportional to 124,611.92, 171,968.52 and 68,027.60

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Solution

The fourth proportional to 124,611.92, 171,968.52 and 68,027.60 is: 93,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,611.92 : 171,968.52 = 68,027.60 : x
  2. Step 2: Convert to fraction form
    124,611.92/171,968.52 = 68,027.60/x
  3. Step 3: Cross multiply
    124,611.92x = 171,968.52 × 68,027.60
  4. Step 4: Simplify right side
    124,611.92x = 11,698,605,691.15
  5. Step 5: Solve for x
    x = 11,698,605,691.15/124,611.92
  6. Step 6: Final answer
    x = 93,880.31

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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.