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Finding the Fourth Proportional to 169,021.94, 253,164.42 and 84,634.92

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Solution

The fourth proportional to 169,021.94, 253,164.42 and 84,634.92 is: 126,767.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,021.94 : 253,164.42 = 84,634.92 : x
  2. Step 2: Convert to fraction form
    169,021.94/253,164.42 = 84,634.92/x
  3. Step 3: Cross multiply
    169,021.94x = 253,164.42 × 84,634.92
  4. Step 4: Simplify right side
    169,021.94x = 21,426,550,433.55
  5. Step 5: Solve for x
    x = 21,426,550,433.55/169,021.94
  6. Step 6: Final answer
    x = 126,767.87

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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.