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Finding the Fourth Proportional to 79,407.21, 109,582.17 and 43,599.54

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Solution

The fourth proportional to 79,407.21, 109,582.17 and 43,599.54 is: 60,167.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,407.21 : 109,582.17 = 43,599.54 : x
  2. Step 2: Convert to fraction form
    79,407.21/109,582.17 = 43,599.54/x
  3. Step 3: Cross multiply
    79,407.21x = 109,582.17 × 43,599.54
  4. Step 4: Simplify right side
    79,407.21x = 4,777,732,095.20
  5. Step 5: Solve for x
    x = 4,777,732,095.20/79,407.21
  6. Step 6: Final answer
    x = 60,167.48

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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.