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Finding the Fourth Proportional to 362,232.80, 543,349.20 and 212,544.80

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Solution

The fourth proportional to 362,232.80, 543,349.20 and 212,544.80 is: 318,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,232.80 : 543,349.20 = 212,544.80 : x
  2. Step 2: Convert to fraction form
    362,232.80/543,349.20 = 212,544.80/x
  3. Step 3: Cross multiply
    362,232.80x = 543,349.20 × 212,544.80
  4. Step 4: Simplify right side
    362,232.80x = 115,486,047,044.16
  5. Step 5: Solve for x
    x = 115,486,047,044.16/362,232.80
  6. Step 6: Final answer
    x = 318,817.20

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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.