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Finding the Fourth Proportional to 18,605.86, 25,676.54 and 10,107.98

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Solution

The fourth proportional to 18,605.86, 25,676.54 and 10,107.98 is: 13,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.86 : 25,676.54 = 10,107.98 : x
  2. Step 2: Convert to fraction form
    18,605.86/25,676.54 = 10,107.98/x
  3. Step 3: Cross multiply
    18,605.86x = 25,676.54 × 10,107.98
  4. Step 4: Simplify right side
    18,605.86x = 259,537,952.79
  5. Step 5: Solve for x
    x = 259,537,952.79/18,605.86
  6. Step 6: Final answer
    x = 13,949.26

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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.