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Finding the Fourth Proportional to 73,230.34, 109,769.41 and 31,137.43

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Solution

The fourth proportional to 73,230.34, 109,769.41 and 31,137.43 is: 46,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,230.34 : 109,769.41 = 31,137.43 : x
  2. Step 2: Convert to fraction form
    73,230.34/109,769.41 = 31,137.43/x
  3. Step 3: Cross multiply
    73,230.34x = 109,769.41 × 31,137.43
  4. Step 4: Simplify right side
    73,230.34x = 3,417,937,320.02
  5. Step 5: Solve for x
    x = 3,417,937,320.02/73,230.34
  6. Step 6: Final answer
    x = 46,673.79

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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.