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Finding the Fourth Proportional to 363,141.20, 544,020.60 and 215,224.40

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Solution

The fourth proportional to 363,141.20, 544,020.60 and 215,224.40 is: 322,426.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,141.20 : 544,020.60 = 215,224.40 : x
  2. Step 2: Convert to fraction form
    363,141.20/544,020.60 = 215,224.40/x
  3. Step 3: Cross multiply
    363,141.20x = 544,020.60 × 215,224.40
  4. Step 4: Simplify right side
    363,141.20x = 117,086,507,222.64
  5. Step 5: Solve for x
    x = 117,086,507,222.64/363,141.20
  6. Step 6: Final answer
    x = 322,426.94

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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.