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Finding the Fourth Proportional to 64,975.54, 89,660.51 and 36,291.33

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Solution

The fourth proportional to 64,975.54, 89,660.51 and 36,291.33 is: 50,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,975.54 : 89,660.51 = 36,291.33 : x
  2. Step 2: Convert to fraction form
    64,975.54/89,660.51 = 36,291.33/x
  3. Step 3: Cross multiply
    64,975.54x = 89,660.51 × 36,291.33
  4. Step 4: Simplify right side
    64,975.54x = 3,253,898,933.89
  5. Step 5: Solve for x
    x = 3,253,898,933.89/64,975.54
  6. Step 6: Final answer
    x = 50,078.83

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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.