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Finding the Fourth Proportional to 18,809.62, 28,186.62 and 17,757.70

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Solution

The fourth proportional to 18,809.62, 28,186.62 and 17,757.70 is: 26,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.62 : 28,186.62 = 17,757.70 : x
  2. Step 2: Convert to fraction form
    18,809.62/28,186.62 = 17,757.70/x
  3. Step 3: Cross multiply
    18,809.62x = 28,186.62 × 17,757.70
  4. Step 4: Simplify right side
    18,809.62x = 500,529,541.97
  5. Step 5: Solve for x
    x = 500,529,541.97/18,809.62
  6. Step 6: Final answer
    x = 26,610.30

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1.5x scale

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.