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Finding the Fourth Proportional to 25,493.68, 38,240.52 and 7,964.89

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Solution

The fourth proportional to 25,493.68, 38,240.52 and 7,964.89 is: 11,947.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,493.68 : 38,240.52 = 7,964.89 : x
  2. Step 2: Convert to fraction form
    25,493.68/38,240.52 = 7,964.89/x
  3. Step 3: Cross multiply
    25,493.68x = 38,240.52 × 7,964.89
  4. Step 4: Simplify right side
    25,493.68x = 304,581,535.34
  5. Step 5: Solve for x
    x = 304,581,535.34/25,493.68
  6. Step 6: Final answer
    x = 11,947.34

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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.