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Finding the Fourth Proportional to 39,671.70, 59,513.09 and 11,593.80

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Solution

The fourth proportional to 39,671.70, 59,513.09 and 11,593.80 is: 17,392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,671.70 : 59,513.09 = 11,593.80 : x
  2. Step 2: Convert to fraction form
    39,671.70/59,513.09 = 11,593.80/x
  3. Step 3: Cross multiply
    39,671.70x = 59,513.09 × 11,593.80
  4. Step 4: Simplify right side
    39,671.70x = 689,982,862.84
  5. Step 5: Solve for x
    x = 689,982,862.84/39,671.70
  6. Step 6: Final answer
    x = 17,392.32

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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.