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Finding the Fourth Proportional to 66,717.18, 100,028.52 and 33,413.40

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Solution

The fourth proportional to 66,717.18, 100,028.52 and 33,413.40 is: 50,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,717.18 : 100,028.52 = 33,413.40 : x
  2. Step 2: Convert to fraction form
    66,717.18/100,028.52 = 33,413.40/x
  3. Step 3: Cross multiply
    66,717.18x = 100,028.52 × 33,413.40
  4. Step 4: Simplify right side
    66,717.18x = 3,342,292,950.17
  5. Step 5: Solve for x
    x = 3,342,292,950.17/66,717.18
  6. Step 6: Final answer
    x = 50,096.44

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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.