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Finding the Fourth Proportional to 67,751.76, 93,500.92 and 40,893.90

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Solution

The fourth proportional to 67,751.76, 93,500.92 and 40,893.90 is: 56,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,751.76 : 93,500.92 = 40,893.90 : x
  2. Step 2: Convert to fraction form
    67,751.76/93,500.92 = 40,893.90/x
  3. Step 3: Cross multiply
    67,751.76x = 93,500.92 × 40,893.90
  4. Step 4: Simplify right side
    67,751.76x = 3,823,617,272.39
  5. Step 5: Solve for x
    x = 3,823,617,272.39/67,751.76
  6. Step 6: Final answer
    x = 56,435.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.