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Finding the Fourth Proportional to 367,631.40, 515,383.80 and 367,631.40

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Solution

The fourth proportional to 367,631.40, 515,383.80 and 367,631.40 is: 515,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,631.40 : 515,383.80 = 367,631.40 : x
  2. Step 2: Convert to fraction form
    367,631.40/515,383.80 = 367,631.40/x
  3. Step 3: Cross multiply
    367,631.40x = 515,383.80 × 367,631.40
  4. Step 4: Simplify right side
    367,631.40x = 189,471,267,931.32
  5. Step 5: Solve for x
    x = 189,471,267,931.32/367,631.40
  6. Step 6: Final answer
    x = 515,383.80

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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.