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Finding the Fourth Proportional to 408,658.21, 563,939.53 and 236,583.46

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Solution

The fourth proportional to 408,658.21, 563,939.53 and 236,583.46 is: 326,480.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,658.21 : 563,939.53 = 236,583.46 : x
  2. Step 2: Convert to fraction form
    408,658.21/563,939.53 = 236,583.46/x
  3. Step 3: Cross multiply
    408,658.21x = 563,939.53 × 236,583.46
  4. Step 4: Simplify right side
    408,658.21x = 133,418,765,238.17
  5. Step 5: Solve for x
    x = 133,418,765,238.17/408,658.21
  6. Step 6: Final answer
    x = 326,480.08

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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.