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Finding the Fourth Proportional to 321,884.60, 482,826.90 and 202,911.80

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Solution

The fourth proportional to 321,884.60, 482,826.90 and 202,911.80 is: 304,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,884.60 : 482,826.90 = 202,911.80 : x
  2. Step 2: Convert to fraction form
    321,884.60/482,826.90 = 202,911.80/x
  3. Step 3: Cross multiply
    321,884.60x = 482,826.90 × 202,911.80
  4. Step 4: Simplify right side
    321,884.60x = 97,971,275,367.42
  5. Step 5: Solve for x
    x = 97,971,275,367.42/321,884.60
  6. Step 6: Final answer
    x = 304,367.70

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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.