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Finding the Fourth Proportional to 367,861.70, 551,566.73 and 142,959.53

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Solution

The fourth proportional to 367,861.70, 551,566.73 and 142,959.53 is: 214,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,861.70 : 551,566.73 = 142,959.53 : x
  2. Step 2: Convert to fraction form
    367,861.70/551,566.73 = 142,959.53/x
  3. Step 3: Cross multiply
    367,861.70x = 551,566.73 × 142,959.53
  4. Step 4: Simplify right side
    367,861.70x = 78,851,722,220.75
  5. Step 5: Solve for x
    x = 78,851,722,220.75/367,861.70
  6. Step 6: Final answer
    x = 214,351.54

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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.