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Finding the Fourth Proportional to 70,954.70, 97,931.68 and 40,760.73

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Solution

The fourth proportional to 70,954.70, 97,931.68 and 40,760.73 is: 56,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.70 : 97,931.68 = 40,760.73 : x
  2. Step 2: Convert to fraction form
    70,954.70/97,931.68 = 40,760.73/x
  3. Step 3: Cross multiply
    70,954.70x = 97,931.68 × 40,760.73
  4. Step 4: Simplify right side
    70,954.70x = 3,991,766,665.02
  5. Step 5: Solve for x
    x = 3,991,766,665.02/70,954.70
  6. Step 6: Final answer
    x = 56,257.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.