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Finding the Fourth Proportional to 71,589.89, 107,283.29 and 52,721.96

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Solution

The fourth proportional to 71,589.89, 107,283.29 and 52,721.96 is: 79,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,589.89 : 107,283.29 = 52,721.96 : x
  2. Step 2: Convert to fraction form
    71,589.89/107,283.29 = 52,721.96/x
  3. Step 3: Cross multiply
    71,589.89x = 107,283.29 × 52,721.96
  4. Step 4: Simplify right side
    71,589.89x = 5,656,184,524.02
  5. Step 5: Solve for x
    x = 5,656,184,524.02/71,589.89
  6. Step 6: Final answer
    x = 79,008.14

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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.