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Finding the Fourth Proportional to 12,376.40, 18,556.40 and 6,832.40

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Solution

The fourth proportional to 12,376.40, 18,556.40 and 6,832.40 is: 10,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.40 : 18,556.40 = 6,832.40 : x
  2. Step 2: Convert to fraction form
    12,376.40/18,556.40 = 6,832.40/x
  3. Step 3: Cross multiply
    12,376.40x = 18,556.40 × 6,832.40
  4. Step 4: Simplify right side
    12,376.40x = 126,784,747.36
  5. Step 5: Solve for x
    x = 126,784,747.36/12,376.40
  6. Step 6: Final answer
    x = 10,244.07

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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.