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Finding the Fourth Proportional to 10,540.99, 15,810.94 and 3,145.51

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Solution

The fourth proportional to 10,540.99, 15,810.94 and 3,145.51 is: 4,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,540.99 : 15,810.94 = 3,145.51 : x
  2. Step 2: Convert to fraction form
    10,540.99/15,810.94 = 3,145.51/x
  3. Step 3: Cross multiply
    10,540.99x = 15,810.94 × 3,145.51
  4. Step 4: Simplify right side
    10,540.99x = 49,733,469.88
  5. Step 5: Solve for x
    x = 49,733,469.88/10,540.99
  6. Step 6: Final answer
    x = 4,718.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.