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Finding the Fourth Proportional to 532,919.40, 798,342.30 and 321,930.60

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Solution

The fourth proportional to 532,919.40, 798,342.30 and 321,930.60 is: 482,269.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,919.40 : 798,342.30 = 321,930.60 : x
  2. Step 2: Convert to fraction form
    532,919.40/798,342.30 = 321,930.60/x
  3. Step 3: Cross multiply
    532,919.40x = 798,342.30 × 321,930.60
  4. Step 4: Simplify right side
    532,919.40x = 257,010,815,644.38
  5. Step 5: Solve for x
    x = 257,010,815,644.38/532,919.40
  6. Step 6: Final answer
    x = 482,269.58

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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.