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Finding the Fourth Proportional to 18,855.60, 26,024.56 and 10,896.72

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Solution

The fourth proportional to 18,855.60, 26,024.56 and 10,896.72 is: 15,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.60 : 26,024.56 = 10,896.72 : x
  2. Step 2: Convert to fraction form
    18,855.60/26,024.56 = 10,896.72/x
  3. Step 3: Cross multiply
    18,855.60x = 26,024.56 × 10,896.72
  4. Step 4: Simplify right side
    18,855.60x = 283,582,343.44
  5. Step 5: Solve for x
    x = 283,582,343.44/18,855.60
  6. Step 6: Final answer
    x = 15,039.69

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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.