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Finding the Fourth Proportional to 91,958.81, 137,935.46 and 25,402.92

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Solution

The fourth proportional to 91,958.81, 137,935.46 and 25,402.92 is: 38,103.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,958.81 : 137,935.46 = 25,402.92 : x
  2. Step 2: Convert to fraction form
    91,958.81/137,935.46 = 25,402.92/x
  3. Step 3: Cross multiply
    91,958.81x = 137,935.46 × 25,402.92
  4. Step 4: Simplify right side
    91,958.81x = 3,503,963,328.53
  5. Step 5: Solve for x
    x = 3,503,963,328.53/91,958.81
  6. Step 6: Final answer
    x = 38,103.62

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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.