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Finding the Fourth Proportional to 79,514.76, 109,731.22 and 43,216.21

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Solution

The fourth proportional to 79,514.76, 109,731.22 and 43,216.21 is: 59,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,514.76 : 109,731.22 = 43,216.21 : x
  2. Step 2: Convert to fraction form
    79,514.76/109,731.22 = 43,216.21/x
  3. Step 3: Cross multiply
    79,514.76x = 109,731.22 × 43,216.21
  4. Step 4: Simplify right side
    79,514.76x = 4,742,167,447.08
  5. Step 5: Solve for x
    x = 4,742,167,447.08/79,514.76
  6. Step 6: Final answer
    x = 59,638.83

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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.