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Finding the Fourth Proportional to 76,647.67, 105,773.70 and 43,113.67

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Solution

The fourth proportional to 76,647.67, 105,773.70 and 43,113.67 is: 59,496.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,647.67 : 105,773.70 = 43,113.67 : x
  2. Step 2: Convert to fraction form
    76,647.67/105,773.70 = 43,113.67/x
  3. Step 3: Cross multiply
    76,647.67x = 105,773.70 × 43,113.67
  4. Step 4: Simplify right side
    76,647.67x = 4,560,292,396.48
  5. Step 5: Solve for x
    x = 4,560,292,396.48/76,647.67
  6. Step 6: Final answer
    x = 59,496.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.