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Finding the Fourth Proportional to 312,229.45, 430,887.09 and 191,347.39

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Solution

The fourth proportional to 312,229.45, 430,887.09 and 191,347.39 is: 264,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,229.45 : 430,887.09 = 191,347.39 : x
  2. Step 2: Convert to fraction form
    312,229.45/430,887.09 = 191,347.39/x
  3. Step 3: Cross multiply
    312,229.45x = 430,887.09 × 191,347.39
  4. Step 4: Simplify right side
    312,229.45x = 82,449,120,056.20
  5. Step 5: Solve for x
    x = 82,449,120,056.20/312,229.45
  6. Step 6: Final answer
    x = 264,065.80

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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.