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Finding the Fourth Proportional to 64,584.63, 89,129.43 and 36,290.25

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Solution

The fourth proportional to 64,584.63, 89,129.43 and 36,290.25 is: 50,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,584.63 : 89,129.43 = 36,290.25 : x
  2. Step 2: Convert to fraction form
    64,584.63/89,129.43 = 36,290.25/x
  3. Step 3: Cross multiply
    64,584.63x = 89,129.43 × 36,290.25
  4. Step 4: Simplify right side
    64,584.63x = 3,234,529,297.06
  5. Step 5: Solve for x
    x = 3,234,529,297.06/64,584.63
  6. Step 6: Final answer
    x = 50,082.03

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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.