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Finding the Fourth Proportional to 66,467.44, 91,720.92 and 36,660.08

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Solution

The fourth proportional to 66,467.44, 91,720.92 and 36,660.08 is: 50,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.44 : 91,720.92 = 36,660.08 : x
  2. Step 2: Convert to fraction form
    66,467.44/91,720.92 = 36,660.08/x
  3. Step 3: Cross multiply
    66,467.44x = 91,720.92 × 36,660.08
  4. Step 4: Simplify right side
    66,467.44x = 3,362,496,264.87
  5. Step 5: Solve for x
    x = 3,362,496,264.87/66,467.44
  6. Step 6: Final answer
    x = 50,588.62

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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.