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Finding the Fourth Proportional to 72,464.20, 108,696.30 and 44,470.60

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Solution

The fourth proportional to 72,464.20, 108,696.30 and 44,470.60 is: 66,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,464.20 : 108,696.30 = 44,470.60 : x
  2. Step 2: Convert to fraction form
    72,464.20/108,696.30 = 44,470.60/x
  3. Step 3: Cross multiply
    72,464.20x = 108,696.30 × 44,470.60
  4. Step 4: Simplify right side
    72,464.20x = 4,833,789,678.78
  5. Step 5: Solve for x
    x = 4,833,789,678.78/72,464.20
  6. Step 6: Final answer
    x = 66,705.90

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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.