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Finding the Fourth Proportional to 18,588.96, 27,876.96 and 11,186.64

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Solution

The fourth proportional to 18,588.96, 27,876.96 and 11,186.64 is: 16,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.96 : 27,876.96 = 11,186.64 : x
  2. Step 2: Convert to fraction form
    18,588.96/27,876.96 = 11,186.64/x
  3. Step 3: Cross multiply
    18,588.96x = 27,876.96 × 11,186.64
  4. Step 4: Simplify right side
    18,588.96x = 311,849,515.81
  5. Step 5: Solve for x
    x = 311,849,515.81/18,588.96
  6. Step 6: Final answer
    x = 16,776.06

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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.