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Finding the Fourth Proportional to 64,629.30, 89,188.43 and 36,335.19

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Solution

The fourth proportional to 64,629.30, 89,188.43 and 36,335.19 is: 50,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,629.30 : 89,188.43 = 36,335.19 : x
  2. Step 2: Convert to fraction form
    64,629.30/89,188.43 = 36,335.19/x
  3. Step 3: Cross multiply
    64,629.30x = 89,188.43 × 36,335.19
  4. Step 4: Simplify right side
    64,629.30x = 3,240,678,549.85
  5. Step 5: Solve for x
    x = 3,240,678,549.85/64,629.30
  6. Step 6: Final answer
    x = 50,142.56

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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.