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Finding the Fourth Proportional to 27,687.64, 41,539.14 and 15,979.48

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Solution

The fourth proportional to 27,687.64, 41,539.14 and 15,979.48 is: 23,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.64 : 41,539.14 = 15,979.48 : x
  2. Step 2: Convert to fraction form
    27,687.64/41,539.14 = 15,979.48/x
  3. Step 3: Cross multiply
    27,687.64x = 41,539.14 × 15,979.48
  4. Step 4: Simplify right side
    27,687.64x = 663,773,856.85
  5. Step 5: Solve for x
    x = 663,773,856.85/27,687.64
  6. Step 6: Final answer
    x = 23,973.65

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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.