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Finding the Fourth Proportional to 73,168.40, 109,748.28 and 45,093.80

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Solution

The fourth proportional to 73,168.40, 109,748.28 and 45,093.80 is: 67,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,168.40 : 109,748.28 = 45,093.80 : x
  2. Step 2: Convert to fraction form
    73,168.40/109,748.28 = 45,093.80/x
  3. Step 3: Cross multiply
    73,168.40x = 109,748.28 × 45,093.80
  4. Step 4: Simplify right side
    73,168.40x = 4,948,966,988.66
  5. Step 5: Solve for x
    x = 4,948,966,988.66/73,168.40
  6. Step 6: Final answer
    x = 67,638.04

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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.