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Finding the Fourth Proportional to 122,913.30, 184,413.15 and 118,593.30

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Solution

The fourth proportional to 122,913.30, 184,413.15 and 118,593.30 is: 177,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,913.30 : 184,413.15 = 118,593.30 : x
  2. Step 2: Convert to fraction form
    122,913.30/184,413.15 = 118,593.30/x
  3. Step 3: Cross multiply
    122,913.30x = 184,413.15 × 118,593.30
  4. Step 4: Simplify right side
    122,913.30x = 21,870,164,021.90
  5. Step 5: Solve for x
    x = 21,870,164,021.90/122,913.30
  6. Step 6: Final answer
    x = 177,931.63

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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.