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Finding the Fourth Proportional to 27,080.31, 40,626.95 and 13,719.99

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Solution

The fourth proportional to 27,080.31, 40,626.95 and 13,719.99 is: 20,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,080.31 : 40,626.95 = 13,719.99 : x
  2. Step 2: Convert to fraction form
    27,080.31/40,626.95 = 13,719.99/x
  3. Step 3: Cross multiply
    27,080.31x = 40,626.95 × 13,719.99
  4. Step 4: Simplify right side
    27,080.31x = 557,401,279.13
  5. Step 5: Solve for x
    x = 557,401,279.13/27,080.31
  6. Step 6: Final answer
    x = 20,583.27

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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.