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Finding the Fourth Proportional to 393,145.10, 589,717.65 and 168,467.30

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Solution

The fourth proportional to 393,145.10, 589,717.65 and 168,467.30 is: 252,700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,145.10 : 589,717.65 = 168,467.30 : x
  2. Step 2: Convert to fraction form
    393,145.10/589,717.65 = 168,467.30/x
  3. Step 3: Cross multiply
    393,145.10x = 589,717.65 × 168,467.30
  4. Step 4: Simplify right side
    393,145.10x = 99,348,140,257.85
  5. Step 5: Solve for x
    x = 99,348,140,257.85/393,145.10
  6. Step 6: Final answer
    x = 252,700.95

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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.