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Finding the Fourth Proportional to 18,640.00, 25,714.72 and 11,082.04

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Solution

The fourth proportional to 18,640.00, 25,714.72 and 11,082.04 is: 15,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.00 : 25,714.72 = 11,082.04 : x
  2. Step 2: Convert to fraction form
    18,640.00/25,714.72 = 11,082.04/x
  3. Step 3: Cross multiply
    18,640.00x = 25,714.72 × 11,082.04
  4. Step 4: Simplify right side
    18,640.00x = 284,971,463.64
  5. Step 5: Solve for x
    x = 284,971,463.64/18,640.00
  6. Step 6: Final answer
    x = 15,288.17

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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.