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Finding the Fourth Proportional to 99,753.28, 149,503.76 and 43,578.56

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Solution

The fourth proportional to 99,753.28, 149,503.76 and 43,578.56 is: 65,312.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,753.28 : 149,503.76 = 43,578.56 : x
  2. Step 2: Convert to fraction form
    99,753.28/149,503.76 = 43,578.56/x
  3. Step 3: Cross multiply
    99,753.28x = 149,503.76 × 43,578.56
  4. Step 4: Simplify right side
    99,753.28x = 6,515,158,575.39
  5. Step 5: Solve for x
    x = 6,515,158,575.39/99,753.28
  6. Step 6: Final answer
    x = 65,312.73

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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.