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Finding the Fourth Proportional to 99,062.25, 136,603.12 and 84,769.37

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Solution

The fourth proportional to 99,062.25, 136,603.12 and 84,769.37 is: 116,893.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,062.25 : 136,603.12 = 84,769.37 : x
  2. Step 2: Convert to fraction form
    99,062.25/136,603.12 = 84,769.37/x
  3. Step 3: Cross multiply
    99,062.25x = 136,603.12 × 84,769.37
  4. Step 4: Simplify right side
    99,062.25x = 11,579,760,763.94
  5. Step 5: Solve for x
    x = 11,579,760,763.94/99,062.25
  6. Step 6: Final answer
    x = 116,893.78

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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.