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Finding the Fourth Proportional to 312,858.92, 469,285.68 and 113,103.92

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Solution

The fourth proportional to 312,858.92, 469,285.68 and 113,103.92 is: 169,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,858.92 : 469,285.68 = 113,103.92 : x
  2. Step 2: Convert to fraction form
    312,858.92/469,285.68 = 113,103.92/x
  3. Step 3: Cross multiply
    312,858.92x = 469,285.68 × 113,103.92
  4. Step 4: Simplify right side
    312,858.92x = 53,078,050,007.87
  5. Step 5: Solve for x
    x = 53,078,050,007.87/312,858.92
  6. Step 6: Final answer
    x = 169,654.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.