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Finding the Fourth Proportional to 89,989.59, 135,051.89 and 33,885.03

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Solution

The fourth proportional to 89,989.59, 135,051.89 and 33,885.03 is: 50,852.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,989.59 : 135,051.89 = 33,885.03 : x
  2. Step 2: Convert to fraction form
    89,989.59/135,051.89 = 33,885.03/x
  3. Step 3: Cross multiply
    89,989.59x = 135,051.89 × 33,885.03
  4. Step 4: Simplify right side
    89,989.59x = 4,576,237,174.78
  5. Step 5: Solve for x
    x = 4,576,237,174.78/89,989.59
  6. Step 6: Final answer
    x = 50,852.96

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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.