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Finding the Fourth Proportional to 312,235.49, 430,895.41 and 191,353.42

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Solution

The fourth proportional to 312,235.49, 430,895.41 and 191,353.42 is: 264,074.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,235.49 : 430,895.41 = 191,353.42 : x
  2. Step 2: Convert to fraction form
    312,235.49/430,895.41 = 191,353.42/x
  3. Step 3: Cross multiply
    312,235.49x = 430,895.41 × 191,353.42
  4. Step 4: Simplify right side
    312,235.49x = 82,453,310,365.80
  5. Step 5: Solve for x
    x = 82,453,310,365.80/312,235.49
  6. Step 6: Final answer
    x = 264,074.11

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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.