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Finding the Fourth Proportional to 24,656.80, 36,979.20 and 7,124.80

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Solution

The fourth proportional to 24,656.80, 36,979.20 and 7,124.80 is: 10,685.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,656.80 : 36,979.20 = 7,124.80 : x
  2. Step 2: Convert to fraction form
    24,656.80/36,979.20 = 7,124.80/x
  3. Step 3: Cross multiply
    24,656.80x = 36,979.20 × 7,124.80
  4. Step 4: Simplify right side
    24,656.80x = 263,469,404.16
  5. Step 5: Solve for x
    x = 263,469,404.16/24,656.80
  6. Step 6: Final answer
    x = 10,685.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.