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Finding the Fourth Proportional to 104,413.60, 156,523.20 and 72,823.60

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Solution

The fourth proportional to 104,413.60, 156,523.20 and 72,823.60 is: 109,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,413.60 : 156,523.20 = 72,823.60 : x
  2. Step 2: Convert to fraction form
    104,413.60/156,523.20 = 72,823.60/x
  3. Step 3: Cross multiply
    104,413.60x = 156,523.20 × 72,823.60
  4. Step 4: Simplify right side
    104,413.60x = 11,398,582,907.52
  5. Step 5: Solve for x
    x = 11,398,582,907.52/104,413.60
  6. Step 6: Final answer
    x = 109,167.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.