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Finding the Fourth Proportional to 91,847.70, 137,763.45 and 25,281.90

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Solution

The fourth proportional to 91,847.70, 137,763.45 and 25,281.90 is: 37,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,847.70 : 137,763.45 = 25,281.90 : x
  2. Step 2: Convert to fraction form
    91,847.70/137,763.45 = 25,281.90/x
  3. Step 3: Cross multiply
    91,847.70x = 137,763.45 × 25,281.90
  4. Step 4: Simplify right side
    91,847.70x = 3,482,921,766.56
  5. Step 5: Solve for x
    x = 3,482,921,766.56/91,847.70
  6. Step 6: Final answer
    x = 37,920.62

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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.