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Finding the Fourth Proportional to 39,628.80, 59,356.80 and 32,716.80

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Solution

The fourth proportional to 39,628.80, 59,356.80 and 32,716.80 is: 49,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.80 : 59,356.80 = 32,716.80 : x
  2. Step 2: Convert to fraction form
    39,628.80/59,356.80 = 32,716.80/x
  3. Step 3: Cross multiply
    39,628.80x = 59,356.80 × 32,716.80
  4. Step 4: Simplify right side
    39,628.80x = 1,941,964,554.24
  5. Step 5: Solve for x
    x = 1,941,964,554.24/39,628.80
  6. Step 6: Final answer
    x = 49,003.87

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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.