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Finding the Fourth Proportional to 88,785, 133,196.94 and 33,381

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Solution

The fourth proportional to 88,785, 133,196.94 and 33,381 is: 50,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,785 : 133,196.94 = 33,381 : x
  2. Step 2: Convert to fraction form
    88,785/133,196.94 = 33,381/x
  3. Step 3: Cross multiply
    88,785x = 133,196.94 × 33,381
  4. Step 4: Simplify right side
    88,785x = 4,446,247,054.14
  5. Step 5: Solve for x
    x = 4,446,247,054.14/88,785
  6. Step 6: Final answer
    x = 50,078.81

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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.