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Finding the Fourth Proportional to 79,771.45, 119,620.59 and 27,159.52

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Solution

The fourth proportional to 79,771.45, 119,620.59 and 27,159.52 is: 40,726.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,771.45 : 119,620.59 = 27,159.52 : x
  2. Step 2: Convert to fraction form
    79,771.45/119,620.59 = 27,159.52/x
  3. Step 3: Cross multiply
    79,771.45x = 119,620.59 × 27,159.52
  4. Step 4: Simplify right side
    79,771.45x = 3,248,837,806.52
  5. Step 5: Solve for x
    x = 3,248,837,806.52/79,771.45
  6. Step 6: Final answer
    x = 40,726.82

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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.