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Finding the Fourth Proportional to 27,751.10, 41,625.72 and 12,939.63

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Solution

The fourth proportional to 27,751.10, 41,625.72 and 12,939.63 is: 19,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.10 : 41,625.72 = 12,939.63 : x
  2. Step 2: Convert to fraction form
    27,751.10/41,625.72 = 12,939.63/x
  3. Step 3: Cross multiply
    27,751.10x = 41,625.72 × 12,939.63
  4. Step 4: Simplify right side
    27,751.10x = 538,621,415.28
  5. Step 5: Solve for x
    x = 538,621,415.28/27,751.10
  6. Step 6: Final answer
    x = 19,409.01

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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.