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Finding the Fourth Proportional to 18,620.10, 26,102.70 and 18,620.10

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Solution

The fourth proportional to 18,620.10, 26,102.70 and 18,620.10 is: 26,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.10 : 26,102.70 = 18,620.10 : x
  2. Step 2: Convert to fraction form
    18,620.10/26,102.70 = 18,620.10/x
  3. Step 3: Cross multiply
    18,620.10x = 26,102.70 × 18,620.10
  4. Step 4: Simplify right side
    18,620.10x = 486,034,884.27
  5. Step 5: Solve for x
    x = 486,034,884.27/18,620.10
  6. Step 6: Final answer
    x = 26,102.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.