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Finding the Fourth Proportional to 18,632.69, 25,713.52 and 10,249.19

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Solution

The fourth proportional to 18,632.69, 25,713.52 and 10,249.19 is: 14,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.69 : 25,713.52 = 10,249.19 : x
  2. Step 2: Convert to fraction form
    18,632.69/25,713.52 = 10,249.19/x
  3. Step 3: Cross multiply
    18,632.69x = 25,713.52 × 10,249.19
  4. Step 4: Simplify right side
    18,632.69x = 263,542,700.80
  5. Step 5: Solve for x
    x = 263,542,700.80/18,632.69
  6. Step 6: Final answer
    x = 14,144.10

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Half scale
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Double scale
Find fourth proportional to 18,633.69, 25,714.90 and 10,250.19
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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.