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Finding the Fourth Proportional to 274,648.40, 412,231.80 and 169,672.40

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Solution

The fourth proportional to 274,648.40, 412,231.80 and 169,672.40 is: 254,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,648.40 : 412,231.80 = 169,672.40 : x
  2. Step 2: Convert to fraction form
    274,648.40/412,231.80 = 169,672.40/x
  3. Step 3: Cross multiply
    274,648.40x = 412,231.80 × 169,672.40
  4. Step 4: Simplify right side
    274,648.40x = 69,944,358,862.32
  5. Step 5: Solve for x
    x = 69,944,358,862.32/274,648.40
  6. Step 6: Final answer
    x = 254,668.73

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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.