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Finding the Fourth Proportional to 678,680.75, 936,590.72 and 372,785.44

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Solution

The fourth proportional to 678,680.75, 936,590.72 and 372,785.44 is: 514,450.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,680.75 : 936,590.72 = 372,785.44 : x
  2. Step 2: Convert to fraction form
    678,680.75/936,590.72 = 372,785.44/x
  3. Step 3: Cross multiply
    678,680.75x = 936,590.72 × 372,785.44
  4. Step 4: Simplify right side
    678,680.75x = 349,147,384,351.20
  5. Step 5: Solve for x
    x = 349,147,384,351.20/678,680.75
  6. Step 6: Final answer
    x = 514,450.11

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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.