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Finding the Fourth Proportional to 17,143.92, 25,714.16 and 12,167.52

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Solution

The fourth proportional to 17,143.92, 25,714.16 and 12,167.52 is: 18,250.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.92 : 25,714.16 = 12,167.52 : x
  2. Step 2: Convert to fraction form
    17,143.92/25,714.16 = 12,167.52/x
  3. Step 3: Cross multiply
    17,143.92x = 25,714.16 × 12,167.52
  4. Step 4: Simplify right side
    17,143.92x = 312,877,556.08
  5. Step 5: Solve for x
    x = 312,877,556.08/17,143.92
  6. Step 6: Final answer
    x = 18,250.06

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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.