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Finding the Fourth Proportional to 18,051.50, 24,911.08 and 10,976.56

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Solution

The fourth proportional to 18,051.50, 24,911.08 and 10,976.56 is: 15,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.50 : 24,911.08 = 10,976.56 : x
  2. Step 2: Convert to fraction form
    18,051.50/24,911.08 = 10,976.56/x
  3. Step 3: Cross multiply
    18,051.50x = 24,911.08 × 10,976.56
  4. Step 4: Simplify right side
    18,051.50x = 273,437,964.28
  5. Step 5: Solve for x
    x = 273,437,964.28/18,051.50
  6. Step 6: Final answer
    x = 15,147.66

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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.