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Finding the Fourth Proportional to 45,755.79, 68,625.23 and 14,159.96

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Solution

The fourth proportional to 45,755.79, 68,625.23 and 14,159.96 is: 21,237.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,755.79 : 68,625.23 = 14,159.96 : x
  2. Step 2: Convert to fraction form
    45,755.79/68,625.23 = 14,159.96/x
  3. Step 3: Cross multiply
    45,755.79x = 68,625.23 × 14,159.96
  4. Step 4: Simplify right side
    45,755.79x = 971,730,511.79
  5. Step 5: Solve for x
    x = 971,730,511.79/45,755.79
  6. Step 6: Final answer
    x = 21,237.32

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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.