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Finding the Fourth Proportional to 99,563.68, 149,369.46 and 28,487.44

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Solution

The fourth proportional to 99,563.68, 149,369.46 and 28,487.44 is: 42,738.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,563.68 : 149,369.46 = 28,487.44 : x
  2. Step 2: Convert to fraction form
    99,563.68/149,369.46 = 28,487.44/x
  3. Step 3: Cross multiply
    99,563.68x = 149,369.46 × 28,487.44
  4. Step 4: Simplify right side
    99,563.68x = 4,255,153,529.58
  5. Step 5: Solve for x
    x = 4,255,153,529.58/99,563.68
  6. Step 6: Final answer
    x = 42,738.01

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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.