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Finding the Fourth Proportional to 17,718.63, 26,581.21 and 7,331.19

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Solution

The fourth proportional to 17,718.63, 26,581.21 and 7,331.19 is: 10,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,718.63 : 26,581.21 = 7,331.19 : x
  2. Step 2: Convert to fraction form
    17,718.63/26,581.21 = 7,331.19/x
  3. Step 3: Cross multiply
    17,718.63x = 26,581.21 × 7,331.19
  4. Step 4: Simplify right side
    17,718.63x = 194,871,900.94
  5. Step 5: Solve for x
    x = 194,871,900.94/17,718.63
  6. Step 6: Final answer
    x = 10,998.14

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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.