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Finding the Fourth Proportional to 66,413.96, 91,648.58 and 36,198.64

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Solution

The fourth proportional to 66,413.96, 91,648.58 and 36,198.64 is: 49,952.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.96 : 91,648.58 = 36,198.64 : x
  2. Step 2: Convert to fraction form
    66,413.96/91,648.58 = 36,198.64/x
  3. Step 3: Cross multiply
    66,413.96x = 91,648.58 × 36,198.64
  4. Step 4: Simplify right side
    66,413.96x = 3,317,553,953.93
  5. Step 5: Solve for x
    x = 3,317,553,953.93/66,413.96
  6. Step 6: Final answer
    x = 49,952.66

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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.