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Finding the Fourth Proportional to 312,093.45, 430,687.22 and 176,171.58

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Solution

The fourth proportional to 312,093.45, 430,687.22 and 176,171.58 is: 243,115.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,093.45 : 430,687.22 = 176,171.58 : x
  2. Step 2: Convert to fraction form
    312,093.45/430,687.22 = 176,171.58/x
  3. Step 3: Cross multiply
    312,093.45x = 430,687.22 × 176,171.58
  4. Step 4: Simplify right side
    312,093.45x = 75,874,847,152.35
  5. Step 5: Solve for x
    x = 75,874,847,152.35/312,093.45
  6. Step 6: Final answer
    x = 243,115.79

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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.