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Finding the Fourth Proportional to 18,714.57, 25,826.13 and 10,331.07

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Solution

The fourth proportional to 18,714.57, 25,826.13 and 10,331.07 is: 14,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714.57 : 25,826.13 = 10,331.07 : x
  2. Step 2: Convert to fraction form
    18,714.57/25,826.13 = 10,331.07/x
  3. Step 3: Cross multiply
    18,714.57x = 25,826.13 × 10,331.07
  4. Step 4: Simplify right side
    18,714.57x = 266,811,556.86
  5. Step 5: Solve for x
    x = 266,811,556.86/18,714.57
  6. Step 6: Final answer
    x = 14,256.89

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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.