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Finding the Fourth Proportional to 64,754.92, 89,361.21 and 36,074.26

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Solution

The fourth proportional to 64,754.92, 89,361.21 and 36,074.26 is: 49,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,754.92 : 89,361.21 = 36,074.26 : x
  2. Step 2: Convert to fraction form
    64,754.92/89,361.21 = 36,074.26/x
  3. Step 3: Cross multiply
    64,754.92x = 89,361.21 × 36,074.26
  4. Step 4: Simplify right side
    64,754.92x = 3,223,639,523.45
  5. Step 5: Solve for x
    x = 3,223,639,523.45/64,754.92
  6. Step 6: Final answer
    x = 49,782.16

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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.