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Finding the Fourth Proportional to 366,928.20, 550,392.30 and 316,189.80

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Solution

The fourth proportional to 366,928.20, 550,392.30 and 316,189.80 is: 474,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,928.20 : 550,392.30 = 316,189.80 : x
  2. Step 2: Convert to fraction form
    366,928.20/550,392.30 = 316,189.80/x
  3. Step 3: Cross multiply
    366,928.20x = 550,392.30 × 316,189.80
  4. Step 4: Simplify right side
    366,928.20x = 174,028,431,258.54
  5. Step 5: Solve for x
    x = 174,028,431,258.54/366,928.20
  6. Step 6: Final answer
    x = 474,284.70

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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.