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Finding the Fourth Proportional to 14,992.44, 20,689.46 and 8,278.08

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Solution

The fourth proportional to 14,992.44, 20,689.46 and 8,278.08 is: 11,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.44 : 20,689.46 = 8,278.08 : x
  2. Step 2: Convert to fraction form
    14,992.44/20,689.46 = 8,278.08/x
  3. Step 3: Cross multiply
    14,992.44x = 20,689.46 × 8,278.08
  4. Step 4: Simplify right side
    14,992.44x = 171,268,963.65
  5. Step 5: Solve for x
    x = 171,268,963.65/14,992.44
  6. Step 6: Final answer
    x = 11,423.69

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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.