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Finding the Fourth Proportional to 61,905.33, 85,431.11 and 36,413.55

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Solution

The fourth proportional to 61,905.33, 85,431.11 and 36,413.55 is: 50,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,905.33 : 85,431.11 = 36,413.55 : x
  2. Step 2: Convert to fraction form
    61,905.33/85,431.11 = 36,413.55/x
  3. Step 3: Cross multiply
    61,905.33x = 85,431.11 × 36,413.55
  4. Step 4: Simplify right side
    61,905.33x = 3,110,849,813.47
  5. Step 5: Solve for x
    x = 3,110,849,813.47/61,905.33
  6. Step 6: Final answer
    x = 50,251.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.