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Finding the Fourth Proportional to 393,175.30, 589,763.56 and 168,518.14

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Solution

The fourth proportional to 393,175.30, 589,763.56 and 168,518.14 is: 252,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,175.30 : 589,763.56 = 168,518.14 : x
  2. Step 2: Convert to fraction form
    393,175.30/589,763.56 = 168,518.14/x
  3. Step 3: Cross multiply
    393,175.30x = 589,763.56 × 168,518.14
  4. Step 4: Simplify right side
    393,175.30x = 99,385,858,170.98
  5. Step 5: Solve for x
    x = 99,385,858,170.98/393,175.30
  6. Step 6: Final answer
    x = 252,777.47

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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.