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Finding the Fourth Proportional to 40,969.72, 61,405.98 and 36,245.80

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Solution

The fourth proportional to 40,969.72, 61,405.98 and 36,245.80 is: 54,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,969.72 : 61,405.98 = 36,245.80 : x
  2. Step 2: Convert to fraction form
    40,969.72/61,405.98 = 36,245.80/x
  3. Step 3: Cross multiply
    40,969.72x = 61,405.98 × 36,245.80
  4. Step 4: Simplify right side
    40,969.72x = 2,225,708,869.88
  5. Step 5: Solve for x
    x = 2,225,708,869.88/40,969.72
  6. Step 6: Final answer
    x = 54,325.70

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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.