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Finding the Fourth Proportional to 20,714.52, 31,071.24 and 6,863.52

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Solution

The fourth proportional to 20,714.52, 31,071.24 and 6,863.52 is: 10,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.52 : 31,071.24 = 6,863.52 : x
  2. Step 2: Convert to fraction form
    20,714.52/31,071.24 = 6,863.52/x
  3. Step 3: Cross multiply
    20,714.52x = 31,071.24 × 6,863.52
  4. Step 4: Simplify right side
    20,714.52x = 213,258,077.16
  5. Step 5: Solve for x
    x = 213,258,077.16/20,714.52
  6. Step 6: Final answer
    x = 10,295.10

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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.