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Finding the Fourth Proportional to 69,407.90, 104,153.31 and 63,761.33

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Solution

The fourth proportional to 69,407.90, 104,153.31 and 63,761.33 is: 95,680.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,407.90 : 104,153.31 = 63,761.33 : x
  2. Step 2: Convert to fraction form
    69,407.90/104,153.31 = 63,761.33/x
  3. Step 3: Cross multiply
    69,407.90x = 104,153.31 × 63,761.33
  4. Step 4: Simplify right side
    69,407.90x = 6,640,953,829.89
  5. Step 5: Solve for x
    x = 6,640,953,829.89/69,407.90
  6. Step 6: Final answer
    x = 95,680.09

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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.