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Finding the Fourth Proportional to 98,018.37, 135,266.49 and 55,007.37

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Solution

The fourth proportional to 98,018.37, 135,266.49 and 55,007.37 is: 75,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,018.37 : 135,266.49 = 55,007.37 : x
  2. Step 2: Convert to fraction form
    98,018.37/135,266.49 = 55,007.37/x
  3. Step 3: Cross multiply
    98,018.37x = 135,266.49 × 55,007.37
  4. Step 4: Simplify right side
    98,018.37x = 7,440,653,864.03
  5. Step 5: Solve for x
    x = 7,440,653,864.03/98,018.37
  6. Step 6: Final answer
    x = 75,910.81

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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.