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Finding the Fourth Proportional to 78,321.94, 108,082.76 and 44,336.87

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Solution

The fourth proportional to 78,321.94, 108,082.76 and 44,336.87 is: 61,184.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,321.94 : 108,082.76 = 44,336.87 : x
  2. Step 2: Convert to fraction form
    78,321.94/108,082.76 = 44,336.87/x
  3. Step 3: Cross multiply
    78,321.94x = 108,082.76 × 44,336.87
  4. Step 4: Simplify right side
    78,321.94x = 4,792,050,922.57
  5. Step 5: Solve for x
    x = 4,792,050,922.57/78,321.94
  6. Step 6: Final answer
    x = 61,184.02

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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.