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Finding the Fourth Proportional to 72,912.64, 100,618.24 and 41,084.64

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Solution

The fourth proportional to 72,912.64, 100,618.24 and 41,084.64 is: 56,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912.64 : 100,618.24 = 41,084.64 : x
  2. Step 2: Convert to fraction form
    72,912.64/100,618.24 = 41,084.64/x
  3. Step 3: Cross multiply
    72,912.64x = 100,618.24 × 41,084.64
  4. Step 4: Simplify right side
    72,912.64x = 4,133,864,167.83
  5. Step 5: Solve for x
    x = 4,133,864,167.83/72,912.64
  6. Step 6: Final answer
    x = 56,696.13

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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.