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Finding the Fourth Proportional to 572,824.66, 790,393.80 and 331,018.60

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Solution

The fourth proportional to 572,824.66, 790,393.80 and 331,018.60 is: 456,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,824.66 : 790,393.80 = 331,018.60 : x
  2. Step 2: Convert to fraction form
    572,824.66/790,393.80 = 331,018.60/x
  3. Step 3: Cross multiply
    572,824.66x = 790,393.80 × 331,018.60
  4. Step 4: Simplify right side
    572,824.66x = 261,635,049,124.68
  5. Step 5: Solve for x
    x = 261,635,049,124.68/572,824.66
  6. Step 6: Final answer
    x = 456,745.44

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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.