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Finding the Fourth Proportional to 367,072.30, 515,082.20 and 367,072.30

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Solution

The fourth proportional to 367,072.30, 515,082.20 and 367,072.30 is: 515,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,072.30 : 515,082.20 = 367,072.30 : x
  2. Step 2: Convert to fraction form
    367,072.30/515,082.20 = 367,072.30/x
  3. Step 3: Cross multiply
    367,072.30x = 515,082.20 × 367,072.30
  4. Step 4: Simplify right side
    367,072.30x = 189,072,407,843.06
  5. Step 5: Solve for x
    x = 189,072,407,843.06/367,072.30
  6. Step 6: Final answer
    x = 515,082.20

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1.5x scale

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.