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Finding the Fourth Proportional to 396,502.20, 594,753.30 and 130,271.40

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Solution

The fourth proportional to 396,502.20, 594,753.30 and 130,271.40 is: 195,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,502.20 : 594,753.30 = 130,271.40 : x
  2. Step 2: Convert to fraction form
    396,502.20/594,753.30 = 130,271.40/x
  3. Step 3: Cross multiply
    396,502.20x = 594,753.30 × 130,271.40
  4. Step 4: Simplify right side
    396,502.20x = 77,479,345,045.62
  5. Step 5: Solve for x
    x = 77,479,345,045.62/396,502.20
  6. Step 6: Final answer
    x = 195,407.10

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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.