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Finding the Fourth Proportional to 73,376.40, 109,991.70 and 35,905.80

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Solution

The fourth proportional to 73,376.40, 109,991.70 and 35,905.80 is: 53,823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,376.40 : 109,991.70 = 35,905.80 : x
  2. Step 2: Convert to fraction form
    73,376.40/109,991.70 = 35,905.80/x
  3. Step 3: Cross multiply
    73,376.40x = 109,991.70 × 35,905.80
  4. Step 4: Simplify right side
    73,376.40x = 3,949,339,981.86
  5. Step 5: Solve for x
    x = 3,949,339,981.86/73,376.40
  6. Step 6: Final answer
    x = 53,823.03

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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.