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Finding the Fourth Proportional to 312,226.39, 430,882.87 and 191,344.33

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Solution

The fourth proportional to 312,226.39, 430,882.87 and 191,344.33 is: 264,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,226.39 : 430,882.87 = 191,344.33 : x
  2. Step 2: Convert to fraction form
    312,226.39/430,882.87 = 191,344.33/x
  3. Step 3: Cross multiply
    312,226.39x = 430,882.87 × 191,344.33
  4. Step 4: Simplify right side
    312,226.39x = 82,446,995,968.58
  5. Step 5: Solve for x
    x = 82,446,995,968.58/312,226.39
  6. Step 6: Final answer
    x = 264,061.58

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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.