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Finding the Fourth Proportional to 18,885.88, 26,059.50 and 10,928.44

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Solution

The fourth proportional to 18,885.88, 26,059.50 and 10,928.44 is: 15,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.88 : 26,059.50 = 10,928.44 : x
  2. Step 2: Convert to fraction form
    18,885.88/26,059.50 = 10,928.44/x
  3. Step 3: Cross multiply
    18,885.88x = 26,059.50 × 10,928.44
  4. Step 4: Simplify right side
    18,885.88x = 284,789,682.18
  5. Step 5: Solve for x
    x = 284,789,682.18/18,885.88
  6. Step 6: Final answer
    x = 15,079.50

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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.