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Finding the Fourth Proportional to 345,805.88, 477,299.59 and 194,990.36

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Solution

The fourth proportional to 345,805.88, 477,299.59 and 194,990.36 is: 269,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,805.88 : 477,299.59 = 194,990.36 : x
  2. Step 2: Convert to fraction form
    345,805.88/477,299.59 = 194,990.36/x
  3. Step 3: Cross multiply
    345,805.88x = 477,299.59 × 194,990.36
  4. Step 4: Simplify right side
    345,805.88x = 93,068,816,007.98
  5. Step 5: Solve for x
    x = 93,068,816,007.98/345,805.88
  6. Step 6: Final answer
    x = 269,136.02

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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.