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Finding the Fourth Proportional to 393,369.40, 589,616.70 and 168,691.60

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Solution

The fourth proportional to 393,369.40, 589,616.70 and 168,691.60 is: 252,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,369.40 : 589,616.70 = 168,691.60 : x
  2. Step 2: Convert to fraction form
    393,369.40/589,616.70 = 168,691.60/x
  3. Step 3: Cross multiply
    393,369.40x = 589,616.70 × 168,691.60
  4. Step 4: Simplify right side
    393,369.40x = 99,463,384,509.72
  5. Step 5: Solve for x
    x = 99,463,384,509.72/393,369.40
  6. Step 6: Final answer
    x = 252,849.83

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1.5x scale

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.