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Finding the Fourth Proportional to 77,396.94, 106,811.73 and 43,412.58

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Solution

The fourth proportional to 77,396.94, 106,811.73 and 43,412.58 is: 59,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,396.94 : 106,811.73 = 43,412.58 : x
  2. Step 2: Convert to fraction form
    77,396.94/106,811.73 = 43,412.58/x
  3. Step 3: Cross multiply
    77,396.94x = 106,811.73 × 43,412.58
  4. Step 4: Simplify right side
    77,396.94x = 4,636,972,773.56
  5. Step 5: Solve for x
    x = 4,636,972,773.56/77,396.94
  6. Step 6: Final answer
    x = 59,911.58

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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.