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Finding the Fourth Proportional to 299,682.36, 449,521.92 and 122,188.68

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Solution

The fourth proportional to 299,682.36, 449,521.92 and 122,188.68 is: 183,282.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,682.36 : 449,521.92 = 122,188.68 : x
  2. Step 2: Convert to fraction form
    299,682.36/449,521.92 = 122,188.68/x
  3. Step 3: Cross multiply
    299,682.36x = 449,521.92 × 122,188.68
  4. Step 4: Simplify right side
    299,682.36x = 54,926,490,035.87
  5. Step 5: Solve for x
    x = 54,926,490,035.87/299,682.36
  6. Step 6: Final answer
    x = 183,282.36

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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.