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Finding the Fourth Proportional to 383,996.69, 529,911.68 and 211,916.24

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Solution

The fourth proportional to 383,996.69, 529,911.68 and 211,916.24 is: 292,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,996.69 : 529,911.68 = 211,916.24 : x
  2. Step 2: Convert to fraction form
    383,996.69/529,911.68 = 211,916.24/x
  3. Step 3: Cross multiply
    383,996.69x = 529,911.68 × 211,916.24
  4. Step 4: Simplify right side
    383,996.69x = 112,296,890,757.68
  5. Step 5: Solve for x
    x = 112,296,890,757.68/383,996.69
  6. Step 6: Final answer
    x = 292,442.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.