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Finding the Fourth Proportional to 60,621.92, 83,692.95 and 40,512.86

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Solution

The fourth proportional to 60,621.92, 83,692.95 and 40,512.86 is: 55,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,621.92 : 83,692.95 = 40,512.86 : x
  2. Step 2: Convert to fraction form
    60,621.92/83,692.95 = 40,512.86/x
  3. Step 3: Cross multiply
    60,621.92x = 83,692.95 × 40,512.86
  4. Step 4: Simplify right side
    60,621.92x = 3,390,640,766.34
  5. Step 5: Solve for x
    x = 3,390,640,766.34/60,621.92
  6. Step 6: Final answer
    x = 55,930.94

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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.