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Finding the Fourth Proportional to 367,631.90, 515,384.50 and 367,631.90

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Solution

The fourth proportional to 367,631.90, 515,384.50 and 367,631.90 is: 515,384.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,631.90 : 515,384.50 = 367,631.90 : x
  2. Step 2: Convert to fraction form
    367,631.90/515,384.50 = 367,631.90/x
  3. Step 3: Cross multiply
    367,631.90x = 515,384.50 × 367,631.90
  4. Step 4: Simplify right side
    367,631.90x = 189,471,782,965.55
  5. Step 5: Solve for x
    x = 189,471,782,965.55/367,631.90
  6. Step 6: Final answer
    x = 515,384.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.