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Finding the Fourth Proportional to 72,474.88, 108,662.64 and 32,478.88

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Solution

The fourth proportional to 72,474.88, 108,662.64 and 32,478.88 is: 48,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,474.88 : 108,662.64 = 32,478.88 : x
  2. Step 2: Convert to fraction form
    72,474.88/108,662.64 = 32,478.88/x
  3. Step 3: Cross multiply
    72,474.88x = 108,662.64 × 32,478.88
  4. Step 4: Simplify right side
    72,474.88x = 3,529,240,845.04
  5. Step 5: Solve for x
    x = 3,529,240,845.04/72,474.88
  6. Step 6: Final answer
    x = 48,696.06

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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.