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Finding the Fourth Proportional to 73,188.45, 109,568.84 and 66,184.56

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Solution

The fourth proportional to 73,188.45, 109,568.84 and 66,184.56 is: 99,083.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.45 : 109,568.84 = 66,184.56 : x
  2. Step 2: Convert to fraction form
    73,188.45/109,568.84 = 66,184.56/x
  3. Step 3: Cross multiply
    73,188.45x = 109,568.84 × 66,184.56
  4. Step 4: Simplify right side
    73,188.45x = 7,251,765,134.19
  5. Step 5: Solve for x
    x = 7,251,765,134.19/73,188.45
  6. Step 6: Final answer
    x = 99,083.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.