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Finding the Fourth Proportional to 308,369.44, 425,550.54 and 172,408.24

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Solution

The fourth proportional to 308,369.44, 425,550.54 and 172,408.24 is: 237,923.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,369.44 : 425,550.54 = 172,408.24 : x
  2. Step 2: Convert to fraction form
    308,369.44/425,550.54 = 172,408.24/x
  3. Step 3: Cross multiply
    308,369.44x = 425,550.54 × 172,408.24
  4. Step 4: Simplify right side
    308,369.44x = 73,368,419,632.45
  5. Step 5: Solve for x
    x = 73,368,419,632.45/308,369.44
  6. Step 6: Final answer
    x = 237,923.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.