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Finding the Fourth Proportional to 312,231.83, 430,890.37 and 191,349.76

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Solution

The fourth proportional to 312,231.83, 430,890.37 and 191,349.76 is: 264,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,231.83 : 430,890.37 = 191,349.76 : x
  2. Step 2: Convert to fraction form
    312,231.83/430,890.37 = 191,349.76/x
  3. Step 3: Cross multiply
    312,231.83x = 430,890.37 × 191,349.76
  4. Step 4: Simplify right side
    312,231.83x = 82,450,768,138.13
  5. Step 5: Solve for x
    x = 82,450,768,138.13/312,231.83
  6. Step 6: Final answer
    x = 264,069.07

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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.