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Finding the Fourth Proportional to 488,860.80, 733,291.20 and 317,618.70

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Solution

The fourth proportional to 488,860.80, 733,291.20 and 317,618.70 is: 476,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,860.80 : 733,291.20 = 317,618.70 : x
  2. Step 2: Convert to fraction form
    488,860.80/733,291.20 = 317,618.70/x
  3. Step 3: Cross multiply
    488,860.80x = 733,291.20 × 317,618.70
  4. Step 4: Simplify right side
    488,860.80x = 232,906,997,665.44
  5. Step 5: Solve for x
    x = 232,906,997,665.44/488,860.80
  6. Step 6: Final answer
    x = 476,428.05

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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.