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Finding the Fourth Proportional to 18,896.34, 26,079.04 and 10,399.16

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Solution

The fourth proportional to 18,896.34, 26,079.04 and 10,399.16 is: 14,351.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.34 : 26,079.04 = 10,399.16 : x
  2. Step 2: Convert to fraction form
    18,896.34/26,079.04 = 10,399.16/x
  3. Step 3: Cross multiply
    18,896.34x = 26,079.04 × 10,399.16
  4. Step 4: Simplify right side
    18,896.34x = 271,200,109.61
  5. Step 5: Solve for x
    x = 271,200,109.61/18,896.34
  6. Step 6: Final answer
    x = 14,351.99

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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.