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Finding the Fourth Proportional to 25,507.31, 38,217.15 and 20,258.51

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Solution

The fourth proportional to 25,507.31, 38,217.15 and 20,258.51 is: 30,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,507.31 : 38,217.15 = 20,258.51 : x
  2. Step 2: Convert to fraction form
    25,507.31/38,217.15 = 20,258.51/x
  3. Step 3: Cross multiply
    25,507.31x = 38,217.15 × 20,258.51
  4. Step 4: Simplify right side
    25,507.31x = 774,222,324.36
  5. Step 5: Solve for x
    x = 774,222,324.36/25,507.31
  6. Step 6: Final answer
    x = 30,352.96

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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.