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Finding the Fourth Proportional to 64,821.27, 89,450.14 and 36,528.78

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Solution

The fourth proportional to 64,821.27, 89,450.14 and 36,528.78 is: 50,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,821.27 : 89,450.14 = 36,528.78 : x
  2. Step 2: Convert to fraction form
    64,821.27/89,450.14 = 36,528.78/x
  3. Step 3: Cross multiply
    64,821.27x = 89,450.14 × 36,528.78
  4. Step 4: Simplify right side
    64,821.27x = 3,267,504,485.03
  5. Step 5: Solve for x
    x = 3,267,504,485.03/64,821.27
  6. Step 6: Final answer
    x = 50,407.91

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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.