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Finding the Fourth Proportional to 107,994.73, 161,860.76 and 76,413.89

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Solution

The fourth proportional to 107,994.73, 161,860.76 and 76,413.89 is: 114,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,994.73 : 161,860.76 = 76,413.89 : x
  2. Step 2: Convert to fraction form
    107,994.73/161,860.76 = 76,413.89/x
  3. Step 3: Cross multiply
    107,994.73x = 161,860.76 × 76,413.89
  4. Step 4: Simplify right side
    107,994.73x = 12,368,409,118.58
  5. Step 5: Solve for x
    x = 12,368,409,118.58/107,994.73
  6. Step 6: Final answer
    x = 114,527.90

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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.