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Finding the Fourth Proportional to 408,081.30, 612,121.95 and 362,591.70

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Solution

The fourth proportional to 408,081.30, 612,121.95 and 362,591.70 is: 543,887.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,081.30 : 612,121.95 = 362,591.70 : x
  2. Step 2: Convert to fraction form
    408,081.30/612,121.95 = 362,591.70/x
  3. Step 3: Cross multiply
    408,081.30x = 612,121.95 × 362,591.70
  4. Step 4: Simplify right side
    408,081.30x = 221,950,338,457.82
  5. Step 5: Solve for x
    x = 221,950,338,457.82/408,081.30
  6. Step 6: Final answer
    x = 543,887.55

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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.