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Finding the Fourth Proportional to 91,903.87, 137,874.26 and 41,970.55

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Solution

The fourth proportional to 91,903.87, 137,874.26 and 41,970.55 is: 62,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,903.87 : 137,874.26 = 41,970.55 : x
  2. Step 2: Convert to fraction form
    91,903.87/137,874.26 = 41,970.55/x
  3. Step 3: Cross multiply
    91,903.87x = 137,874.26 × 41,970.55
  4. Step 4: Simplify right side
    91,903.87x = 5,786,658,523.04
  5. Step 5: Solve for x
    x = 5,786,658,523.04/91,903.87
  6. Step 6: Final answer
    x = 62,964.25

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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.