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Finding the Fourth Proportional to 367,905.70, 551,858.55 and 255,931.30

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Solution

The fourth proportional to 367,905.70, 551,858.55 and 255,931.30 is: 383,896.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,905.70 : 551,858.55 = 255,931.30 : x
  2. Step 2: Convert to fraction form
    367,905.70/551,858.55 = 255,931.30/x
  3. Step 3: Cross multiply
    367,905.70x = 551,858.55 × 255,931.30
  4. Step 4: Simplify right side
    367,905.70x = 141,237,876,117.62
  5. Step 5: Solve for x
    x = 141,237,876,117.62/367,905.70
  6. Step 6: Final answer
    x = 383,896.95

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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.