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Finding the Fourth Proportional to 613,384.20, 920,105.10 and 192,673.80

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Solution

The fourth proportional to 613,384.20, 920,105.10 and 192,673.80 is: 289,019.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,384.20 : 920,105.10 = 192,673.80 : x
  2. Step 2: Convert to fraction form
    613,384.20/920,105.10 = 192,673.80/x
  3. Step 3: Cross multiply
    613,384.20x = 920,105.10 × 192,673.80
  4. Step 4: Simplify right side
    613,384.20x = 177,280,146,016.38
  5. Step 5: Solve for x
    x = 177,280,146,016.38/613,384.20
  6. Step 6: Final answer
    x = 289,019.75

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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.