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Finding the Fourth Proportional to 367,928.60, 550,580.70 and 255,079.40

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Solution

The fourth proportional to 367,928.60, 550,580.70 and 255,079.40 is: 381,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,928.60 : 550,580.70 = 255,079.40 : x
  2. Step 2: Convert to fraction form
    367,928.60/550,580.70 = 255,079.40/x
  3. Step 3: Cross multiply
    367,928.60x = 550,580.70 × 255,079.40
  4. Step 4: Simplify right side
    367,928.60x = 140,441,794,607.58
  5. Step 5: Solve for x
    x = 140,441,794,607.58/367,928.60
  6. Step 6: Final answer
    x = 381,709.37

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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.