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Finding the Fourth Proportional to 61,115.61, 91,531.26 and 59,433.96

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Solution

The fourth proportional to 61,115.61, 91,531.26 and 59,433.96 is: 89,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.61 : 91,531.26 = 59,433.96 : x
  2. Step 2: Convert to fraction form
    61,115.61/91,531.26 = 59,433.96/x
  3. Step 3: Cross multiply
    61,115.61x = 91,531.26 × 59,433.96
  4. Step 4: Simplify right side
    61,115.61x = 5,440,065,245.59
  5. Step 5: Solve for x
    x = 5,440,065,245.59/61,115.61
  6. Step 6: Final answer
    x = 89,012.70

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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.