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Finding the Fourth Proportional to 18,791.64, 25,929.72 and 10,832.28

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Solution

The fourth proportional to 18,791.64, 25,929.72 and 10,832.28 is: 14,946.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.64 : 25,929.72 = 10,832.28 : x
  2. Step 2: Convert to fraction form
    18,791.64/25,929.72 = 10,832.28/x
  3. Step 3: Cross multiply
    18,791.64x = 25,929.72 × 10,832.28
  4. Step 4: Simplify right side
    18,791.64x = 280,877,987.36
  5. Step 5: Solve for x
    x = 280,877,987.36/18,791.64
  6. Step 6: Final answer
    x = 14,946.97

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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.