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Finding the Fourth Proportional to 66,721.92, 92,043.84 and 44,069.76

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Solution

The fourth proportional to 66,721.92, 92,043.84 and 44,069.76 is: 60,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.92 : 92,043.84 = 44,069.76 : x
  2. Step 2: Convert to fraction form
    66,721.92/92,043.84 = 44,069.76/x
  3. Step 3: Cross multiply
    66,721.92x = 92,043.84 × 44,069.76
  4. Step 4: Simplify right side
    66,721.92x = 4,056,349,938.28
  5. Step 5: Solve for x
    x = 4,056,349,938.28/66,721.92
  6. Step 6: Final answer
    x = 60,794.86

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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.