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Finding the Fourth Proportional to 18,855.80, 26,022.18 and 10,472.28

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Solution

The fourth proportional to 18,855.80, 26,022.18 and 10,472.28 is: 14,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.80 : 26,022.18 = 10,472.28 : x
  2. Step 2: Convert to fraction form
    18,855.80/26,022.18 = 10,472.28/x
  3. Step 3: Cross multiply
    18,855.80x = 26,022.18 × 10,472.28
  4. Step 4: Simplify right side
    18,855.80x = 272,511,555.17
  5. Step 5: Solve for x
    x = 272,511,555.17/18,855.80
  6. Step 6: Final answer
    x = 14,452.40

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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.