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Finding the Fourth Proportional to 64,769.76, 89,380.26 and 36,474.84

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Solution

The fourth proportional to 64,769.76, 89,380.26 and 36,474.84 is: 50,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,769.76 : 89,380.26 = 36,474.84 : x
  2. Step 2: Convert to fraction form
    64,769.76/89,380.26 = 36,474.84/x
  3. Step 3: Cross multiply
    64,769.76x = 89,380.26 × 36,474.84
  4. Step 4: Simplify right side
    64,769.76x = 3,260,130,682.66
  5. Step 5: Solve for x
    x = 3,260,130,682.66/64,769.76
  6. Step 6: Final answer
    x = 50,334.15

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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.