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Finding the Fourth Proportional to 18,991.93, 26,207.51 and 10,493.96

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Solution

The fourth proportional to 18,991.93, 26,207.51 and 10,493.96 is: 14,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.93 : 26,207.51 = 10,493.96 : x
  2. Step 2: Convert to fraction form
    18,991.93/26,207.51 = 10,493.96/x
  3. Step 3: Cross multiply
    18,991.93x = 26,207.51 × 10,493.96
  4. Step 4: Simplify right side
    18,991.93x = 275,020,378.13
  5. Step 5: Solve for x
    x = 275,020,378.13/18,991.93
  6. Step 6: Final answer
    x = 14,480.91

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Similar ratio
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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.