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Finding the Fourth Proportional to 91,872.51, 137,813.48 and 25,311.17

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Solution

The fourth proportional to 91,872.51, 137,813.48 and 25,311.17 is: 37,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,872.51 : 137,813.48 = 25,311.17 : x
  2. Step 2: Convert to fraction form
    91,872.51/137,813.48 = 25,311.17/x
  3. Step 3: Cross multiply
    91,872.51x = 137,813.48 × 25,311.17
  4. Step 4: Simplify right side
    91,872.51x = 3,488,219,604.95
  5. Step 5: Solve for x
    x = 3,488,219,604.95/91,872.51
  6. Step 6: Final answer
    x = 37,968.05

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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.