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Finding the Fourth Proportional to 61,104, 91,671.36 and 17,328

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Solution

The fourth proportional to 61,104, 91,671.36 and 17,328 is: 25,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,104 : 91,671.36 = 17,328 : x
  2. Step 2: Convert to fraction form
    61,104/91,671.36 = 17,328/x
  3. Step 3: Cross multiply
    61,104x = 91,671.36 × 17,328
  4. Step 4: Simplify right side
    61,104x = 1,588,481,326.08
  5. Step 5: Solve for x
    x = 1,588,481,326.08/61,104
  6. Step 6: Final answer
    x = 25,996.36

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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.