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Finding the Fourth Proportional to 312,105.27, 430,582.72 and 181,260.65

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Solution

The fourth proportional to 312,105.27, 430,582.72 and 181,260.65 is: 250,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,105.27 : 430,582.72 = 181,260.65 : x
  2. Step 2: Convert to fraction form
    312,105.27/430,582.72 = 181,260.65/x
  3. Step 3: Cross multiply
    312,105.27x = 430,582.72 × 181,260.65
  4. Step 4: Simplify right side
    312,105.27x = 78,047,702,756.90
  5. Step 5: Solve for x
    x = 78,047,702,756.90/312,105.27
  6. Step 6: Final answer
    x = 250,068.52

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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.