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Finding the Fourth Proportional to 77,858.45, 107,440.68 and 43,868.94

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Solution

The fourth proportional to 77,858.45, 107,440.68 and 43,868.94 is: 60,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,858.45 : 107,440.68 = 43,868.94 : x
  2. Step 2: Convert to fraction form
    77,858.45/107,440.68 = 43,868.94/x
  3. Step 3: Cross multiply
    77,858.45x = 107,440.68 × 43,868.94
  4. Step 4: Simplify right side
    77,858.45x = 4,713,308,744.48
  5. Step 5: Solve for x
    x = 4,713,308,744.48/77,858.45
  6. Step 6: Final answer
    x = 60,536.90

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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.