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Finding the Fourth Proportional to 223,694.81, 308,694.26 and 121,722.29

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Solution

The fourth proportional to 223,694.81, 308,694.26 and 121,722.29 is: 167,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,694.81 : 308,694.26 = 121,722.29 : x
  2. Step 2: Convert to fraction form
    223,694.81/308,694.26 = 121,722.29/x
  3. Step 3: Cross multiply
    223,694.81x = 308,694.26 × 121,722.29
  4. Step 4: Simplify right side
    223,694.81x = 37,574,971,242.58
  5. Step 5: Solve for x
    x = 37,574,971,242.58/223,694.81
  6. Step 6: Final answer
    x = 167,974.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.