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Finding the Fourth Proportional to 73,715.60, 110,573.40 and 18,311.60

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Solution

The fourth proportional to 73,715.60, 110,573.40 and 18,311.60 is: 27,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,715.60 : 110,573.40 = 18,311.60 : x
  2. Step 2: Convert to fraction form
    73,715.60/110,573.40 = 18,311.60/x
  3. Step 3: Cross multiply
    73,715.60x = 110,573.40 × 18,311.60
  4. Step 4: Simplify right side
    73,715.60x = 2,024,775,871.44
  5. Step 5: Solve for x
    x = 2,024,775,871.44/73,715.60
  6. Step 6: Final answer
    x = 27,467.40

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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.