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Finding the Fourth Proportional to 207,347.34, 311,070.38 and 67,105.97

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Solution

The fourth proportional to 207,347.34, 311,070.38 and 67,105.97 is: 100,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,347.34 : 311,070.38 = 67,105.97 : x
  2. Step 2: Convert to fraction form
    207,347.34/311,070.38 = 67,105.97/x
  3. Step 3: Cross multiply
    207,347.34x = 311,070.38 × 67,105.97
  4. Step 4: Simplify right side
    207,347.34x = 20,874,678,863.80
  5. Step 5: Solve for x
    x = 20,874,678,863.80/207,347.34
  6. Step 6: Final answer
    x = 100,674.93

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1.5x scale

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.