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Finding the Fourth Proportional to 25,761.42, 38,635.92 and 7,041.54

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Solution

The fourth proportional to 25,761.42, 38,635.92 and 7,041.54 is: 10,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,761.42 : 38,635.92 = 7,041.54 : x
  2. Step 2: Convert to fraction form
    25,761.42/38,635.92 = 7,041.54/x
  3. Step 3: Cross multiply
    25,761.42x = 38,635.92 × 7,041.54
  4. Step 4: Simplify right side
    25,761.42x = 272,056,376.12
  5. Step 5: Solve for x
    x = 272,056,376.12/25,761.42
  6. Step 6: Final answer
    x = 10,560.61

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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.