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Finding the Fourth Proportional to 368,385.78, 552,576.82 and 318,313.52

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Solution

The fourth proportional to 368,385.78, 552,576.82 and 318,313.52 is: 477,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,385.78 : 552,576.82 = 318,313.52 : x
  2. Step 2: Convert to fraction form
    368,385.78/552,576.82 = 318,313.52/x
  3. Step 3: Cross multiply
    368,385.78x = 552,576.82 × 318,313.52
  4. Step 4: Simplify right side
    368,385.78x = 175,892,672,644.61
  5. Step 5: Solve for x
    x = 175,892,672,644.61/368,385.78
  6. Step 6: Final answer
    x = 477,468.68

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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.