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Finding the Fourth Proportional to 104,698.26, 144,418.79 and 91,301.67

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Solution

The fourth proportional to 104,698.26, 144,418.79 and 91,301.67 is: 125,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,698.26 : 144,418.79 = 91,301.67 : x
  2. Step 2: Convert to fraction form
    104,698.26/144,418.79 = 91,301.67/x
  3. Step 3: Cross multiply
    104,698.26x = 144,418.79 × 91,301.67
  4. Step 4: Simplify right side
    104,698.26x = 13,185,676,249.87
  5. Step 5: Solve for x
    x = 13,185,676,249.87/104,698.26
  6. Step 6: Final answer
    x = 125,939.78

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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.