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Finding the Fourth Proportional to 82,803.10, 124,142.82 and 26,611.15

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Solution

The fourth proportional to 82,803.10, 124,142.82 and 26,611.15 is: 39,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,803.10 : 124,142.82 = 26,611.15 : x
  2. Step 2: Convert to fraction form
    82,803.10/124,142.82 = 26,611.15/x
  3. Step 3: Cross multiply
    82,803.10x = 124,142.82 × 26,611.15
  4. Step 4: Simplify right side
    82,803.10x = 3,303,583,204.44
  5. Step 5: Solve for x
    x = 3,303,583,204.44/82,803.10
  6. Step 6: Final answer
    x = 39,896.85

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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.