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Finding the Fourth Proportional to 72,342.60, 108,773.10 and 60,937.80

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Solution

The fourth proportional to 72,342.60, 108,773.10 and 60,937.80 is: 91,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,342.60 : 108,773.10 = 60,937.80 : x
  2. Step 2: Convert to fraction form
    72,342.60/108,773.10 = 60,937.80/x
  3. Step 3: Cross multiply
    72,342.60x = 108,773.10 × 60,937.80
  4. Step 4: Simplify right side
    72,342.60x = 6,628,393,413.18
  5. Step 5: Solve for x
    x = 6,628,393,413.18/72,342.60
  6. Step 6: Final answer
    x = 91,625.04

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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.