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Finding the Fourth Proportional to 322,795.40, 483,609.90 and 276,139.40

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Solution

The fourth proportional to 322,795.40, 483,609.90 and 276,139.40 is: 413,710.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,795.40 : 483,609.90 = 276,139.40 : x
  2. Step 2: Convert to fraction form
    322,795.40/483,609.90 = 276,139.40/x
  3. Step 3: Cross multiply
    322,795.40x = 483,609.90 × 276,139.40
  4. Step 4: Simplify right side
    322,795.40x = 133,543,747,620.06
  5. Step 5: Solve for x
    x = 133,543,747,620.06/322,795.40
  6. Step 6: Final answer
    x = 413,710.19

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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.