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Finding the Fourth Proportional to 250,343.40, 375,031.20 and 139,198.44

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Solution

The fourth proportional to 250,343.40, 375,031.20 and 139,198.44 is: 208,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,343.40 : 375,031.20 = 139,198.44 : x
  2. Step 2: Convert to fraction form
    250,343.40/375,031.20 = 139,198.44/x
  3. Step 3: Cross multiply
    250,343.40x = 375,031.20 × 139,198.44
  4. Step 4: Simplify right side
    250,343.40x = 52,203,757,991.33
  5. Step 5: Solve for x
    x = 52,203,757,991.33/250,343.40
  6. Step 6: Final answer
    x = 208,528.60

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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.