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Finding the Fourth Proportional to 39,608.69, 59,419.64 and 14,648.79

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Solution

The fourth proportional to 39,608.69, 59,419.64 and 14,648.79 is: 21,975.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,608.69 : 59,419.64 = 14,648.79 : x
  2. Step 2: Convert to fraction form
    39,608.69/59,419.64 = 14,648.79/x
  3. Step 3: Cross multiply
    39,608.69x = 59,419.64 × 14,648.79
  4. Step 4: Simplify right side
    39,608.69x = 870,425,754.99
  5. Step 5: Solve for x
    x = 870,425,754.99/39,608.69
  6. Step 6: Final answer
    x = 21,975.63

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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.