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Finding the Fourth Proportional to 89,008.99, 122,777.09 and 55,027.87

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Solution

The fourth proportional to 89,008.99, 122,777.09 and 55,027.87 is: 75,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,008.99 : 122,777.09 = 55,027.87 : x
  2. Step 2: Convert to fraction form
    89,008.99/122,777.09 = 55,027.87/x
  3. Step 3: Cross multiply
    89,008.99x = 122,777.09 × 55,027.87
  4. Step 4: Simplify right side
    89,008.99x = 6,756,161,747.50
  5. Step 5: Solve for x
    x = 6,756,161,747.50/89,008.99
  6. Step 6: Final answer
    x = 75,904.26

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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.