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Finding the Fourth Proportional to 283,806.74, 391,662.75 and 169,069.70

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Solution

The fourth proportional to 283,806.74, 391,662.75 and 169,069.70 is: 233,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,806.74 : 391,662.75 = 169,069.70 : x
  2. Step 2: Convert to fraction form
    283,806.74/391,662.75 = 169,069.70/x
  3. Step 3: Cross multiply
    283,806.74x = 391,662.75 × 169,069.70
  4. Step 4: Simplify right side
    283,806.74x = 66,218,303,643.68
  5. Step 5: Solve for x
    x = 66,218,303,643.68/283,806.74
  6. Step 6: Final answer
    x = 233,321.81

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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.