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Finding the Fourth Proportional to 67,744.92, 101,634.30 and 28,281.72

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Solution

The fourth proportional to 67,744.92, 101,634.30 and 28,281.72 is: 42,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,744.92 : 101,634.30 = 28,281.72 : x
  2. Step 2: Convert to fraction form
    67,744.92/101,634.30 = 28,281.72/x
  3. Step 3: Cross multiply
    67,744.92x = 101,634.30 × 28,281.72
  4. Step 4: Simplify right side
    67,744.92x = 2,874,392,815.00
  5. Step 5: Solve for x
    x = 2,874,392,815.00/67,744.92
  6. Step 6: Final answer
    x = 42,429.64

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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.