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Finding the Fourth Proportional to 26,588.40, 39,879.40 and 11,004.40

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Solution

The fourth proportional to 26,588.40, 39,879.40 and 11,004.40 is: 16,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,588.40 : 39,879.40 = 11,004.40 : x
  2. Step 2: Convert to fraction form
    26,588.40/39,879.40 = 11,004.40/x
  3. Step 3: Cross multiply
    26,588.40x = 39,879.40 × 11,004.40
  4. Step 4: Simplify right side
    26,588.40x = 438,848,869.36
  5. Step 5: Solve for x
    x = 438,848,869.36/26,588.40
  6. Step 6: Final answer
    x = 16,505.28

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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.