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Finding the Fourth Proportional to 66,916.72, 92,385.12 and 41,800.24

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Solution

The fourth proportional to 66,916.72, 92,385.12 and 41,800.24 is: 57,709.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,916.72 : 92,385.12 = 41,800.24 : x
  2. Step 2: Convert to fraction form
    66,916.72/92,385.12 = 41,800.24/x
  3. Step 3: Cross multiply
    66,916.72x = 92,385.12 × 41,800.24
  4. Step 4: Simplify right side
    66,916.72x = 3,861,720,188.43
  5. Step 5: Solve for x
    x = 3,861,720,188.43/66,916.72
  6. Step 6: Final answer
    x = 57,709.35

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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.