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Finding the Fourth Proportional to 39,716.40, 59,623.20 and 39,424.80

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Solution

The fourth proportional to 39,716.40, 59,623.20 and 39,424.80 is: 59,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.40 : 59,623.20 = 39,424.80 : x
  2. Step 2: Convert to fraction form
    39,716.40/59,623.20 = 39,424.80/x
  3. Step 3: Cross multiply
    39,716.40x = 59,623.20 × 39,424.80
  4. Step 4: Simplify right side
    39,716.40x = 2,350,632,735.36
  5. Step 5: Solve for x
    x = 2,350,632,735.36/39,716.40
  6. Step 6: Final answer
    x = 59,185.44

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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.