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Finding the Fourth Proportional to 8,273.87, 11,412.79 and 4,914.26

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Solution

The fourth proportional to 8,273.87, 11,412.79 and 4,914.26 is: 6,778.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,273.87 : 11,412.79 = 4,914.26 : x
  2. Step 2: Convert to fraction form
    8,273.87/11,412.79 = 4,914.26/x
  3. Step 3: Cross multiply
    8,273.87x = 11,412.79 × 4,914.26
  4. Step 4: Simplify right side
    8,273.87x = 56,085,417.39
  5. Step 5: Solve for x
    x = 56,085,417.39/8,273.87
  6. Step 6: Final answer
    x = 6,778.62

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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.