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Finding the Fourth Proportional to 348,903.21, 481,428.85 and 205,690.96

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Solution

The fourth proportional to 348,903.21, 481,428.85 and 205,690.96 is: 283,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,903.21 : 481,428.85 = 205,690.96 : x
  2. Step 2: Convert to fraction form
    348,903.21/481,428.85 = 205,690.96/x
  3. Step 3: Cross multiply
    348,903.21x = 481,428.85 × 205,690.96
  4. Step 4: Simplify right side
    348,903.21x = 99,025,562,328.20
  5. Step 5: Solve for x
    x = 99,025,562,328.20/348,903.21
  6. Step 6: Final answer
    x = 283,819.58

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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.