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Finding the Fourth Proportional to 355,327.20, 532,213.20 and 308,671.20

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Solution

The fourth proportional to 355,327.20, 532,213.20 and 308,671.20 is: 462,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,327.20 : 532,213.20 = 308,671.20 : x
  2. Step 2: Convert to fraction form
    355,327.20/532,213.20 = 308,671.20/x
  3. Step 3: Cross multiply
    355,327.20x = 532,213.20 × 308,671.20
  4. Step 4: Simplify right side
    355,327.20x = 164,278,887,099.84
  5. Step 5: Solve for x
    x = 164,278,887,099.84/355,327.20
  6. Step 6: Final answer
    x = 462,331.30

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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.