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Finding the Fourth Proportional to 45,687.88, 68,531.10 and 14,522.68

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Solution

The fourth proportional to 45,687.88, 68,531.10 and 14,522.68 is: 21,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,687.88 : 68,531.10 = 14,522.68 : x
  2. Step 2: Convert to fraction form
    45,687.88/68,531.10 = 14,522.68/x
  3. Step 3: Cross multiply
    45,687.88x = 68,531.10 × 14,522.68
  4. Step 4: Simplify right side
    45,687.88x = 995,255,235.35
  5. Step 5: Solve for x
    x = 995,255,235.35/45,687.88
  6. Step 6: Final answer
    x = 21,783.79

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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.