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Finding the Fourth Proportional to 621,806.20, 933,093.30 and 247,790.20

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Solution

The fourth proportional to 621,806.20, 933,093.30 and 247,790.20 is: 371,838.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,806.20 : 933,093.30 = 247,790.20 : x
  2. Step 2: Convert to fraction form
    621,806.20/933,093.30 = 247,790.20/x
  3. Step 3: Cross multiply
    621,806.20x = 933,093.30 × 247,790.20
  4. Step 4: Simplify right side
    621,806.20x = 231,211,375,425.66
  5. Step 5: Solve for x
    x = 231,211,375,425.66/621,806.20
  6. Step 6: Final answer
    x = 371,838.32

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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.