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Finding the Fourth Proportional to 18,901.80, 26,083.98 and 10,518.12

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Solution

The fourth proportional to 18,901.80, 26,083.98 and 10,518.12 is: 14,514.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.80 : 26,083.98 = 10,518.12 : x
  2. Step 2: Convert to fraction form
    18,901.80/26,083.98 = 10,518.12/x
  3. Step 3: Cross multiply
    18,901.80x = 26,083.98 × 10,518.12
  4. Step 4: Simplify right side
    18,901.80x = 274,354,431.72
  5. Step 5: Solve for x
    x = 274,354,431.72/18,901.80
  6. Step 6: Final answer
    x = 14,514.73

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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.