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Finding the Fourth Proportional to 393,576.95, 589,991.36 and 153,844.54

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Solution

The fourth proportional to 393,576.95, 589,991.36 and 153,844.54 is: 230,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,576.95 : 589,991.36 = 153,844.54 : x
  2. Step 2: Convert to fraction form
    393,576.95/589,991.36 = 153,844.54/x
  3. Step 3: Cross multiply
    393,576.95x = 589,991.36 × 153,844.54
  4. Step 4: Simplify right side
    393,576.95x = 90,766,948,292.81
  5. Step 5: Solve for x
    x = 90,766,948,292.81/393,576.95
  6. Step 6: Final answer
    x = 230,620.59

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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.