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Finding the Fourth Proportional to 362,426.80, 543,640.20 and 212,738.80

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Solution

The fourth proportional to 362,426.80, 543,640.20 and 212,738.80 is: 319,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,426.80 : 543,640.20 = 212,738.80 : x
  2. Step 2: Convert to fraction form
    362,426.80/543,640.20 = 212,738.80/x
  3. Step 3: Cross multiply
    362,426.80x = 543,640.20 × 212,738.80
  4. Step 4: Simplify right side
    362,426.80x = 115,653,363,779.76
  5. Step 5: Solve for x
    x = 115,653,363,779.76/362,426.80
  6. Step 6: Final answer
    x = 319,108.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.