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Finding the Fourth Proportional to 78,632.88, 117,893.70 and 25,308.33

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Solution

The fourth proportional to 78,632.88, 117,893.70 and 25,308.33 is: 37,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,632.88 : 117,893.70 = 25,308.33 : x
  2. Step 2: Convert to fraction form
    78,632.88/117,893.70 = 25,308.33/x
  3. Step 3: Cross multiply
    78,632.88x = 117,893.70 × 25,308.33
  4. Step 4: Simplify right side
    78,632.88x = 2,983,692,664.52
  5. Step 5: Solve for x
    x = 2,983,692,664.52/78,632.88
  6. Step 6: Final answer
    x = 37,944.59

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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.