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Finding the Fourth Proportional to 34,720.64, 47,914.52 and 18,805.11

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Solution

The fourth proportional to 34,720.64, 47,914.52 and 18,805.11 is: 25,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.64 : 47,914.52 = 18,805.11 : x
  2. Step 2: Convert to fraction form
    34,720.64/47,914.52 = 18,805.11/x
  3. Step 3: Cross multiply
    34,720.64x = 47,914.52 × 18,805.11
  4. Step 4: Simplify right side
    34,720.64x = 901,037,819.20
  5. Step 5: Solve for x
    x = 901,037,819.20/34,720.64
  6. Step 6: Final answer
    x = 25,951.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.