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Finding the Fourth Proportional to 27,856.70, 41,748.60 and 11,203.10

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Solution

The fourth proportional to 27,856.70, 41,748.60 and 11,203.10 is: 16,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,856.70 : 41,748.60 = 11,203.10 : x
  2. Step 2: Convert to fraction form
    27,856.70/41,748.60 = 11,203.10/x
  3. Step 3: Cross multiply
    27,856.70x = 41,748.60 × 11,203.10
  4. Step 4: Simplify right side
    27,856.70x = 467,713,740.66
  5. Step 5: Solve for x
    x = 467,713,740.66/27,856.70
  6. Step 6: Final answer
    x = 16,789.99

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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.