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Finding the Fourth Proportional to 12,331.28, 18,499.08 and 5,754.08

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Solution

The fourth proportional to 12,331.28, 18,499.08 and 5,754.08 is: 8,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.28 : 18,499.08 = 5,754.08 : x
  2. Step 2: Convert to fraction form
    12,331.28/18,499.08 = 5,754.08/x
  3. Step 3: Cross multiply
    12,331.28x = 18,499.08 × 5,754.08
  4. Step 4: Simplify right side
    12,331.28x = 106,445,186.25
  5. Step 5: Solve for x
    x = 106,445,186.25/12,331.28
  6. Step 6: Final answer
    x = 8,632.13

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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.