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Finding the Fourth Proportional to 497,467.91, 686,530.05 and 279,745.11

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Solution

The fourth proportional to 497,467.91, 686,530.05 and 279,745.11 is: 386,061.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,467.91 : 686,530.05 = 279,745.11 : x
  2. Step 2: Convert to fraction form
    497,467.91/686,530.05 = 279,745.11/x
  3. Step 3: Cross multiply
    497,467.91x = 686,530.05 × 279,745.11
  4. Step 4: Simplify right side
    497,467.91x = 192,053,424,355.56
  5. Step 5: Solve for x
    x = 192,053,424,355.56/497,467.91
  6. Step 6: Final answer
    x = 386,061.94

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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.