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Finding the Fourth Proportional to 18,999.87, 26,219.81 and 10,616.37

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Solution

The fourth proportional to 18,999.87, 26,219.81 and 10,616.37 is: 14,650.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.87 : 26,219.81 = 10,616.37 : x
  2. Step 2: Convert to fraction form
    18,999.87/26,219.81 = 10,616.37/x
  3. Step 3: Cross multiply
    18,999.87x = 26,219.81 × 10,616.37
  4. Step 4: Simplify right side
    18,999.87x = 278,359,151.21
  5. Step 5: Solve for x
    x = 278,359,151.21/18,999.87
  6. Step 6: Final answer
    x = 14,650.58

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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.