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Finding the Fourth Proportional to 9,761.65, 14,645.78 and 3,099.26

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Solution

The fourth proportional to 9,761.65, 14,645.78 and 3,099.26 is: 4,649.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.65 : 14,645.78 = 3,099.26 : x
  2. Step 2: Convert to fraction form
    9,761.65/14,645.78 = 3,099.26/x
  3. Step 3: Cross multiply
    9,761.65x = 14,645.78 × 3,099.26
  4. Step 4: Simplify right side
    9,761.65x = 45,391,080.12
  5. Step 5: Solve for x
    x = 45,391,080.12/9,761.65
  6. Step 6: Final answer
    x = 4,649.94

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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.