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Finding the Fourth Proportional to 18,176.01, 27,276.57 and 11,939.01

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Solution

The fourth proportional to 18,176.01, 27,276.57 and 11,939.01 is: 17,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.01 : 27,276.57 = 11,939.01 : x
  2. Step 2: Convert to fraction form
    18,176.01/27,276.57 = 11,939.01/x
  3. Step 3: Cross multiply
    18,176.01x = 27,276.57 × 11,939.01
  4. Step 4: Simplify right side
    18,176.01x = 325,655,242.00
  5. Step 5: Solve for x
    x = 325,655,242.00/18,176.01
  6. Step 6: Final answer
    x = 17,916.76

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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.