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Finding the Fourth Proportional to 64,739.42, 89,342.07 and 36,446.12

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Solution

The fourth proportional to 64,739.42, 89,342.07 and 36,446.12 is: 50,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,739.42 : 89,342.07 = 36,446.12 : x
  2. Step 2: Convert to fraction form
    64,739.42/89,342.07 = 36,446.12/x
  3. Step 3: Cross multiply
    64,739.42x = 89,342.07 × 36,446.12
  4. Step 4: Simplify right side
    64,739.42x = 3,256,171,804.27
  5. Step 5: Solve for x
    x = 3,256,171,804.27/64,739.42
  6. Step 6: Final answer
    x = 50,296.59

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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.