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Finding the Fourth Proportional to 79,709.22, 119,582.28 and 27,118.71

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Solution

The fourth proportional to 79,709.22, 119,582.28 and 27,118.71 is: 40,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,709.22 : 119,582.28 = 27,118.71 : x
  2. Step 2: Convert to fraction form
    79,709.22/119,582.28 = 27,118.71/x
  3. Step 3: Cross multiply
    79,709.22x = 119,582.28 × 27,118.71
  4. Step 4: Simplify right side
    79,709.22x = 3,242,917,172.46
  5. Step 5: Solve for x
    x = 3,242,917,172.46/79,709.22
  6. Step 6: Final answer
    x = 40,684.34

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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.