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Finding the Fourth Proportional to 86,450.59, 129,676.02 and 56,999.98

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Solution

The fourth proportional to 86,450.59, 129,676.02 and 56,999.98 is: 85,500.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,450.59 : 129,676.02 = 56,999.98 : x
  2. Step 2: Convert to fraction form
    86,450.59/129,676.02 = 56,999.98/x
  3. Step 3: Cross multiply
    86,450.59x = 129,676.02 × 56,999.98
  4. Step 4: Simplify right side
    86,450.59x = 7,391,530,546.48
  5. Step 5: Solve for x
    x = 7,391,530,546.48/86,450.59
  6. Step 6: Final answer
    x = 85,500.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.