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Finding the Fourth Proportional to 132,512.90, 182,864.52 and 75,920.63

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Solution

The fourth proportional to 132,512.90, 182,864.52 and 75,920.63 is: 104,768.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,512.90 : 182,864.52 = 75,920.63 : x
  2. Step 2: Convert to fraction form
    132,512.90/182,864.52 = 75,920.63/x
  3. Step 3: Cross multiply
    132,512.90x = 182,864.52 × 75,920.63
  4. Step 4: Simplify right side
    132,512.90x = 13,883,188,648.73
  5. Step 5: Solve for x
    x = 13,883,188,648.73/132,512.90
  6. Step 6: Final answer
    x = 104,768.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.