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Finding the Fourth Proportional to 429,757.66, 644,138.22 and 404,846.36

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Solution

The fourth proportional to 429,757.66, 644,138.22 and 404,846.36 is: 606,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,757.66 : 644,138.22 = 404,846.36 : x
  2. Step 2: Convert to fraction form
    429,757.66/644,138.22 = 404,846.36/x
  3. Step 3: Cross multiply
    429,757.66x = 644,138.22 × 404,846.36
  4. Step 4: Simplify right side
    429,757.66x = 260,777,013,703.88
  5. Step 5: Solve for x
    x = 260,777,013,703.88/429,757.66
  6. Step 6: Final answer
    x = 606,800.15

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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.