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Finding the Fourth Proportional to 135,809.52, 203,479.08 and 73,522.80

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Solution

The fourth proportional to 135,809.52, 203,479.08 and 73,522.80 is: 110,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,809.52 : 203,479.08 = 73,522.80 : x
  2. Step 2: Convert to fraction form
    135,809.52/203,479.08 = 73,522.80/x
  3. Step 3: Cross multiply
    135,809.52x = 203,479.08 × 73,522.80
  4. Step 4: Simplify right side
    135,809.52x = 14,960,351,703.02
  5. Step 5: Solve for x
    x = 14,960,351,703.02/135,809.52
  6. Step 6: Final answer
    x = 110,156.87

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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.