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Finding the Fourth Proportional to 362,402.20, 543,603.30 and 303,790.60

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Solution

The fourth proportional to 362,402.20, 543,603.30 and 303,790.60 is: 455,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,402.20 : 543,603.30 = 303,790.60 : x
  2. Step 2: Convert to fraction form
    362,402.20/543,603.30 = 303,790.60/x
  3. Step 3: Cross multiply
    362,402.20x = 543,603.30 × 303,790.60
  4. Step 4: Simplify right side
    362,402.20x = 165,141,572,668.98
  5. Step 5: Solve for x
    x = 165,141,572,668.98/362,402.20
  6. Step 6: Final answer
    x = 455,685.90

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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.