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Finding the Fourth Proportional to 352,873, 529,309.50 and 90,217

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Solution

The fourth proportional to 352,873, 529,309.50 and 90,217 is: 135,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,873 : 529,309.50 = 90,217 : x
  2. Step 2: Convert to fraction form
    352,873/529,309.50 = 90,217/x
  3. Step 3: Cross multiply
    352,873x = 529,309.50 × 90,217
  4. Step 4: Simplify right side
    352,873x = 47,752,715,161.50
  5. Step 5: Solve for x
    x = 47,752,715,161.50/352,873
  6. Step 6: Final answer
    x = 135,325.50

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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.