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Finding the Fourth Proportional to 364,989.20, 547,246.20 and 327,664.40

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Solution

The fourth proportional to 364,989.20, 547,246.20 and 327,664.40 is: 491,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,989.20 : 547,246.20 = 327,664.40 : x
  2. Step 2: Convert to fraction form
    364,989.20/547,246.20 = 327,664.40/x
  3. Step 3: Cross multiply
    364,989.20x = 547,246.20 × 327,664.40
  4. Step 4: Simplify right side
    364,989.20x = 179,313,097,775.28
  5. Step 5: Solve for x
    x = 179,313,097,775.28/364,989.20
  6. Step 6: Final answer
    x = 491,283.30

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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.