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Finding the Fourth Proportional to 120,240.58, 165,927.96 and 65,792.50

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Solution

The fourth proportional to 120,240.58, 165,927.96 and 65,792.50 is: 90,791.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,240.58 : 165,927.96 = 65,792.50 : x
  2. Step 2: Convert to fraction form
    120,240.58/165,927.96 = 65,792.50/x
  3. Step 3: Cross multiply
    120,240.58x = 165,927.96 × 65,792.50
  4. Step 4: Simplify right side
    120,240.58x = 10,916,815,308.30
  5. Step 5: Solve for x
    x = 10,916,815,308.30/120,240.58
  6. Step 6: Final answer
    x = 90,791.44

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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.