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Finding the Fourth Proportional to 39,740.56, 59,620.07 and 11,659.48

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Solution

The fourth proportional to 39,740.56, 59,620.07 and 11,659.48 is: 17,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,740.56 : 59,620.07 = 11,659.48 : x
  2. Step 2: Convert to fraction form
    39,740.56/59,620.07 = 11,659.48/x
  3. Step 3: Cross multiply
    39,740.56x = 59,620.07 × 11,659.48
  4. Step 4: Simplify right side
    39,740.56x = 695,139,139.30
  5. Step 5: Solve for x
    x = 695,139,139.30/39,740.56
  6. Step 6: Final answer
    x = 17,491.93

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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.