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Finding the Fourth Proportional to 138,786.94, 208,180.95 and 33,606.01

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Solution

The fourth proportional to 138,786.94, 208,180.95 and 33,606.01 is: 50,409.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,786.94 : 208,180.95 = 33,606.01 : x
  2. Step 2: Convert to fraction form
    138,786.94/208,180.95 = 33,606.01/x
  3. Step 3: Cross multiply
    138,786.94x = 208,180.95 × 33,606.01
  4. Step 4: Simplify right side
    138,786.94x = 6,996,131,087.51
  5. Step 5: Solve for x
    x = 6,996,131,087.51/138,786.94
  6. Step 6: Final answer
    x = 50,409.15

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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.