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Finding the Fourth Proportional to 79,451.58, 109,616.03 and 45,447.68

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Solution

The fourth proportional to 79,451.58, 109,616.03 and 45,447.68 is: 62,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,451.58 : 109,616.03 = 45,447.68 : x
  2. Step 2: Convert to fraction form
    79,451.58/109,616.03 = 45,447.68/x
  3. Step 3: Cross multiply
    79,451.58x = 109,616.03 × 45,447.68
  4. Step 4: Simplify right side
    79,451.58x = 4,981,793,478.99
  5. Step 5: Solve for x
    x = 4,981,793,478.99/79,451.58
  6. Step 6: Final answer
    x = 62,702.26

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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.