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Finding the Fourth Proportional to 259,872.20, 389,808.30 and 62,880.20

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Solution

The fourth proportional to 259,872.20, 389,808.30 and 62,880.20 is: 94,320.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,872.20 : 389,808.30 = 62,880.20 : x
  2. Step 2: Convert to fraction form
    259,872.20/389,808.30 = 62,880.20/x
  3. Step 3: Cross multiply
    259,872.20x = 389,808.30 × 62,880.20
  4. Step 4: Simplify right side
    259,872.20x = 24,511,221,916.62
  5. Step 5: Solve for x
    x = 24,511,221,916.62/259,872.20
  6. Step 6: Final answer
    x = 94,320.29

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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.