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Finding the Fourth Proportional to 64,843.86, 89,479.16 and 36,556.50

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Solution

The fourth proportional to 64,843.86, 89,479.16 and 36,556.50 is: 50,444.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,843.86 : 89,479.16 = 36,556.50 : x
  2. Step 2: Convert to fraction form
    64,843.86/89,479.16 = 36,556.50/x
  3. Step 3: Cross multiply
    64,843.86x = 89,479.16 × 36,556.50
  4. Step 4: Simplify right side
    64,843.86x = 3,271,044,912.54
  5. Step 5: Solve for x
    x = 3,271,044,912.54/64,843.86
  6. Step 6: Final answer
    x = 50,444.94

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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.