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Finding the Fourth Proportional to 64,976.16, 89,658.96 and 36,288.96

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Solution

The fourth proportional to 64,976.16, 89,658.96 and 36,288.96 is: 50,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.16 : 89,658.96 = 36,288.96 : x
  2. Step 2: Convert to fraction form
    64,976.16/89,658.96 = 36,288.96/x
  3. Step 3: Cross multiply
    64,976.16x = 89,658.96 × 36,288.96
  4. Step 4: Simplify right side
    64,976.16x = 3,253,630,413.08
  5. Step 5: Solve for x
    x = 3,253,630,413.08/64,976.16
  6. Step 6: Final answer
    x = 50,074.22

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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.