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Finding the Fourth Proportional to 26,596.13, 39,894.21 and 8,128.13

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Solution

The fourth proportional to 26,596.13, 39,894.21 and 8,128.13 is: 12,192.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,596.13 : 39,894.21 = 8,128.13 : x
  2. Step 2: Convert to fraction form
    26,596.13/39,894.21 = 8,128.13/x
  3. Step 3: Cross multiply
    26,596.13x = 39,894.21 × 8,128.13
  4. Step 4: Simplify right side
    26,596.13x = 324,265,125.66
  5. Step 5: Solve for x
    x = 324,265,125.66/26,596.13
  6. Step 6: Final answer
    x = 12,192.19

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Double scale
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Similar ratio
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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.