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Finding the Fourth Proportional to 73,173.60, 109,728 and 26,426.88

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Solution

The fourth proportional to 73,173.60, 109,728 and 26,426.88 is: 39,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,173.60 : 109,728 = 26,426.88 : x
  2. Step 2: Convert to fraction form
    73,173.60/109,728 = 26,426.88/x
  3. Step 3: Cross multiply
    73,173.60x = 109,728 × 26,426.88
  4. Step 4: Simplify right side
    73,173.60x = 2,899,768,688.64
  5. Step 5: Solve for x
    x = 2,899,768,688.64/73,173.60
  6. Step 6: Final answer
    x = 39,628.62

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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.