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Finding the Fourth Proportional to 363,440.80, 544,124.40 and 321,968.80

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Solution

The fourth proportional to 363,440.80, 544,124.40 and 321,968.80 is: 482,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,440.80 : 544,124.40 = 321,968.80 : x
  2. Step 2: Convert to fraction form
    363,440.80/544,124.40 = 321,968.80/x
  3. Step 3: Cross multiply
    363,440.80x = 544,124.40 × 321,968.80
  4. Step 4: Simplify right side
    363,440.80x = 175,191,080,118.72
  5. Step 5: Solve for x
    x = 175,191,080,118.72/363,440.80
  6. Step 6: Final answer
    x = 482,034.71

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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.