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Finding the Fourth Proportional to 393,123.23, 589,957.47 and 179,917.19

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Solution

The fourth proportional to 393,123.23, 589,957.47 and 179,917.19 is: 270,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,123.23 : 589,957.47 = 179,917.19 : x
  2. Step 2: Convert to fraction form
    393,123.23/589,957.47 = 179,917.19/x
  3. Step 3: Cross multiply
    393,123.23x = 589,957.47 × 179,917.19
  4. Step 4: Simplify right side
    393,123.23x = 106,143,487,272.12
  5. Step 5: Solve for x
    x = 106,143,487,272.12/393,123.23
  6. Step 6: Final answer
    x = 270,000.55

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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.