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Finding the Fourth Proportional to 72,991.60, 109,504.08 and 23,071.44

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Solution

The fourth proportional to 72,991.60, 109,504.08 and 23,071.44 is: 34,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,991.60 : 109,504.08 = 23,071.44 : x
  2. Step 2: Convert to fraction form
    72,991.60/109,504.08 = 23,071.44/x
  3. Step 3: Cross multiply
    72,991.60x = 109,504.08 × 23,071.44
  4. Step 4: Simplify right side
    72,991.60x = 2,526,416,811.48
  5. Step 5: Solve for x
    x = 2,526,416,811.48/72,991.60
  6. Step 6: Final answer
    x = 34,612.43

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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.