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Finding the Fourth Proportional to 363,434.80, 544,115.40 and 321,962.80

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Solution

The fourth proportional to 363,434.80, 544,115.40 and 321,962.80 is: 482,025.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,434.80 : 544,115.40 = 321,962.80 : x
  2. Step 2: Convert to fraction form
    363,434.80/544,115.40 = 321,962.80/x
  3. Step 3: Cross multiply
    363,434.80x = 544,115.40 × 321,962.80
  4. Step 4: Simplify right side
    363,434.80x = 175,184,917,707.12
  5. Step 5: Solve for x
    x = 175,184,917,707.12/363,434.80
  6. Step 6: Final answer
    x = 482,025.71

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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.