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Finding the Fourth Proportional to 396,030.72, 546,488.64 and 226,231.68

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Solution

The fourth proportional to 396,030.72, 546,488.64 and 226,231.68 is: 312,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,030.72 : 546,488.64 = 226,231.68 : x
  2. Step 2: Convert to fraction form
    396,030.72/546,488.64 = 226,231.68/x
  3. Step 3: Cross multiply
    396,030.72x = 546,488.64 × 226,231.68
  4. Step 4: Simplify right side
    396,030.72x = 123,633,043,128.12
  5. Step 5: Solve for x
    x = 123,633,043,128.12/396,030.72
  6. Step 6: Final answer
    x = 312,180.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.