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Finding the Fourth Proportional to 65,891.65, 90,930.52 and 35,676.99

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Solution

The fourth proportional to 65,891.65, 90,930.52 and 35,676.99 is: 49,234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,891.65 : 90,930.52 = 35,676.99 : x
  2. Step 2: Convert to fraction form
    65,891.65/90,930.52 = 35,676.99/x
  3. Step 3: Cross multiply
    65,891.65x = 90,930.52 × 35,676.99
  4. Step 4: Simplify right side
    65,891.65x = 3,244,127,638.32
  5. Step 5: Solve for x
    x = 3,244,127,638.32/65,891.65
  6. Step 6: Final answer
    x = 49,234.27

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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.