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Finding the Fourth Proportional to 39,978.63, 59,982.53 and 23,335.56

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Solution

The fourth proportional to 39,978.63, 59,982.53 and 23,335.56 is: 35,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,978.63 : 59,982.53 = 23,335.56 : x
  2. Step 2: Convert to fraction form
    39,978.63/59,982.53 = 23,335.56/x
  3. Step 3: Cross multiply
    39,978.63x = 59,982.53 × 23,335.56
  4. Step 4: Simplify right side
    39,978.63x = 1,399,725,811.09
  5. Step 5: Solve for x
    x = 1,399,725,811.09/39,978.63
  6. Step 6: Final answer
    x = 35,011.85

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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.