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Finding the Fourth Proportional to 18,672.86, 25,768.28 and 10,714.92

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Solution

The fourth proportional to 18,672.86, 25,768.28 and 10,714.92 is: 14,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.86 : 25,768.28 = 10,714.92 : x
  2. Step 2: Convert to fraction form
    18,672.86/25,768.28 = 10,714.92/x
  3. Step 3: Cross multiply
    18,672.86x = 25,768.28 × 10,714.92
  4. Step 4: Simplify right side
    18,672.86x = 276,105,058.74
  5. Step 5: Solve for x
    x = 276,105,058.74/18,672.86
  6. Step 6: Final answer
    x = 14,786.44

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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.