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Finding the Fourth Proportional to 48,608.40, 72,912.60 and 41,318.40

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Solution

The fourth proportional to 48,608.40, 72,912.60 and 41,318.40 is: 61,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,608.40 : 72,912.60 = 41,318.40 : x
  2. Step 2: Convert to fraction form
    48,608.40/72,912.60 = 41,318.40/x
  3. Step 3: Cross multiply
    48,608.40x = 72,912.60 × 41,318.40
  4. Step 4: Simplify right side
    48,608.40x = 3,012,631,971.84
  5. Step 5: Solve for x
    x = 3,012,631,971.84/48,608.40
  6. Step 6: Final answer
    x = 61,977.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.