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Finding the Fourth Proportional to 393,168.73, 589,753.70 and 168,511.58

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Solution

The fourth proportional to 393,168.73, 589,753.70 and 168,511.58 is: 252,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,168.73 : 589,753.70 = 168,511.58 : x
  2. Step 2: Convert to fraction form
    393,168.73/589,753.70 = 168,511.58/x
  3. Step 3: Cross multiply
    393,168.73x = 589,753.70 × 168,511.58
  4. Step 4: Simplify right side
    393,168.73x = 99,380,329,693.51
  5. Step 5: Solve for x
    x = 99,380,329,693.51/393,168.73
  6. Step 6: Final answer
    x = 252,767.64

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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.