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Finding the Fourth Proportional to 91,131, 136,696.50 and 25,467

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Solution

The fourth proportional to 91,131, 136,696.50 and 25,467 is: 38,200.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,131 : 136,696.50 = 25,467 : x
  2. Step 2: Convert to fraction form
    91,131/136,696.50 = 25,467/x
  3. Step 3: Cross multiply
    91,131x = 136,696.50 × 25,467
  4. Step 4: Simplify right side
    91,131x = 3,481,249,765.50
  5. Step 5: Solve for x
    x = 3,481,249,765.50/91,131
  6. Step 6: Final answer
    x = 38,200.50

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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.