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Finding the Fourth Proportional to 39,619.20, 59,428.80 and 37,027.20

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Solution

The fourth proportional to 39,619.20, 59,428.80 and 37,027.20 is: 55,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,619.20 : 59,428.80 = 37,027.20 : x
  2. Step 2: Convert to fraction form
    39,619.20/59,428.80 = 37,027.20/x
  3. Step 3: Cross multiply
    39,619.20x = 59,428.80 × 37,027.20
  4. Step 4: Simplify right side
    39,619.20x = 2,200,482,063.36
  5. Step 5: Solve for x
    x = 2,200,482,063.36/39,619.20
  6. Step 6: Final answer
    x = 55,540.80

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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.