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Finding the Fourth Proportional to 91,886.70, 137,830.68 and 25,330.44

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Solution

The fourth proportional to 91,886.70, 137,830.68 and 25,330.44 is: 37,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,886.70 : 137,830.68 = 25,330.44 : x
  2. Step 2: Convert to fraction form
    91,886.70/137,830.68 = 25,330.44/x
  3. Step 3: Cross multiply
    91,886.70x = 137,830.68 × 25,330.44
  4. Step 4: Simplify right side
    91,886.70x = 3,491,311,769.90
  5. Step 5: Solve for x
    x = 3,491,311,769.90/91,886.70
  6. Step 6: Final answer
    x = 37,995.83

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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.