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Finding the Fourth Proportional to 404,324.80, 606,487.20 and 262,607.20

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Solution

The fourth proportional to 404,324.80, 606,487.20 and 262,607.20 is: 393,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,324.80 : 606,487.20 = 262,607.20 : x
  2. Step 2: Convert to fraction form
    404,324.80/606,487.20 = 262,607.20/x
  3. Step 3: Cross multiply
    404,324.80x = 606,487.20 × 262,607.20
  4. Step 4: Simplify right side
    404,324.80x = 159,267,905,427.84
  5. Step 5: Solve for x
    x = 159,267,905,427.84/404,324.80
  6. Step 6: Final answer
    x = 393,910.80

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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.