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Finding the Fourth Proportional to 300,626.88, 414,939.96 and 173,379.12

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Solution

The fourth proportional to 300,626.88, 414,939.96 and 173,379.12 is: 239,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,626.88 : 414,939.96 = 173,379.12 : x
  2. Step 2: Convert to fraction form
    300,626.88/414,939.96 = 173,379.12/x
  3. Step 3: Cross multiply
    300,626.88x = 414,939.96 × 173,379.12
  4. Step 4: Simplify right side
    300,626.88x = 71,941,925,117.64
  5. Step 5: Solve for x
    x = 71,941,925,117.64/300,626.88
  6. Step 6: Final answer
    x = 239,306.36

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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.