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Finding the Fourth Proportional to 274,590.10, 411,885.15 and 168,301.90

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Solution

The fourth proportional to 274,590.10, 411,885.15 and 168,301.90 is: 252,452.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,590.10 : 411,885.15 = 168,301.90 : x
  2. Step 2: Convert to fraction form
    274,590.10/411,885.15 = 168,301.90/x
  3. Step 3: Cross multiply
    274,590.10x = 411,885.15 × 168,301.90
  4. Step 4: Simplify right side
    274,590.10x = 69,321,053,326.79
  5. Step 5: Solve for x
    x = 69,321,053,326.79/274,590.10
  6. Step 6: Final answer
    x = 252,452.85

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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.