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Finding the Fourth Proportional to 12,442.65, 18,665.28 and 5,867.07

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Solution

The fourth proportional to 12,442.65, 18,665.28 and 5,867.07 is: 8,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.65 : 18,665.28 = 5,867.07 : x
  2. Step 2: Convert to fraction form
    12,442.65/18,665.28 = 5,867.07/x
  3. Step 3: Cross multiply
    12,442.65x = 18,665.28 × 5,867.07
  4. Step 4: Simplify right side
    12,442.65x = 109,510,504.33
  5. Step 5: Solve for x
    x = 109,510,504.33/12,442.65
  6. Step 6: Final answer
    x = 8,801.22

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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.