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Finding the Fourth Proportional to 80,525.99, 120,823.11 and 43,076.25

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Solution

The fourth proportional to 80,525.99, 120,823.11 and 43,076.25 is: 64,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,525.99 : 120,823.11 = 43,076.25 : x
  2. Step 2: Convert to fraction form
    80,525.99/120,823.11 = 43,076.25/x
  3. Step 3: Cross multiply
    80,525.99x = 120,823.11 × 43,076.25
  4. Step 4: Simplify right side
    80,525.99x = 5,204,606,492.14
  5. Step 5: Solve for x
    x = 5,204,606,492.14/80,525.99
  6. Step 6: Final answer
    x = 64,632.63

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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.