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Finding the Fourth Proportional to 323,955.72, 485,930.07 and 110,721.60

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Solution

The fourth proportional to 323,955.72, 485,930.07 and 110,721.60 is: 166,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,955.72 : 485,930.07 = 110,721.60 : x
  2. Step 2: Convert to fraction form
    323,955.72/485,930.07 = 110,721.60/x
  3. Step 3: Cross multiply
    323,955.72x = 485,930.07 × 110,721.60
  4. Step 4: Simplify right side
    323,955.72x = 53,802,954,838.51
  5. Step 5: Solve for x
    x = 53,802,954,838.51/323,955.72
  6. Step 6: Final answer
    x = 166,081.20

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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.