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Finding the Fourth Proportional to 316,523.73, 474,786.45 and 79,866.39

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Solution

The fourth proportional to 316,523.73, 474,786.45 and 79,866.39 is: 119,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,523.73 : 474,786.45 = 79,866.39 : x
  2. Step 2: Convert to fraction form
    316,523.73/474,786.45 = 79,866.39/x
  3. Step 3: Cross multiply
    316,523.73x = 474,786.45 × 79,866.39
  4. Step 4: Simplify right side
    316,523.73x = 37,919,479,782.42
  5. Step 5: Solve for x
    x = 37,919,479,782.42/316,523.73
  6. Step 6: Final answer
    x = 119,799.80

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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.