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Finding the Fourth Proportional to 11,485.70, 17,235.84 and 4,917.41

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Solution

The fourth proportional to 11,485.70, 17,235.84 and 4,917.41 is: 7,379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.70 : 17,235.84 = 4,917.41 : x
  2. Step 2: Convert to fraction form
    11,485.70/17,235.84 = 4,917.41/x
  3. Step 3: Cross multiply
    11,485.70x = 17,235.84 × 4,917.41
  4. Step 4: Simplify right side
    11,485.70x = 84,755,691.97
  5. Step 5: Solve for x
    x = 84,755,691.97/11,485.70
  6. Step 6: Final answer
    x = 7,379.24

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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.