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Finding the Fourth Proportional to 73,251.64, 109,880.16 and 20,662.53

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Solution

The fourth proportional to 73,251.64, 109,880.16 and 20,662.53 is: 30,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,251.64 : 109,880.16 = 20,662.53 : x
  2. Step 2: Convert to fraction form
    73,251.64/109,880.16 = 20,662.53/x
  3. Step 3: Cross multiply
    73,251.64x = 109,880.16 × 20,662.53
  4. Step 4: Simplify right side
    73,251.64x = 2,270,402,102.40
  5. Step 5: Solve for x
    x = 2,270,402,102.40/73,251.64
  6. Step 6: Final answer
    x = 30,994.56

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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.