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Finding the Fourth Proportional to 15,873.64, 23,821.38 and 7,118.34

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Solution

The fourth proportional to 15,873.64, 23,821.38 and 7,118.34 is: 10,682.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.64 : 23,821.38 = 7,118.34 : x
  2. Step 2: Convert to fraction form
    15,873.64/23,821.38 = 7,118.34/x
  3. Step 3: Cross multiply
    15,873.64x = 23,821.38 × 7,118.34
  4. Step 4: Simplify right side
    15,873.64x = 169,568,682.11
  5. Step 5: Solve for x
    x = 169,568,682.11/15,873.64
  6. Step 6: Final answer
    x = 10,682.41

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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.