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Finding the Fourth Proportional to 104,759.76, 156,707.64 and 67,262.16

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Solution

The fourth proportional to 104,759.76, 156,707.64 and 67,262.16 is: 100,615.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,759.76 : 156,707.64 = 67,262.16 : x
  2. Step 2: Convert to fraction form
    104,759.76/156,707.64 = 67,262.16/x
  3. Step 3: Cross multiply
    104,759.76x = 156,707.64 × 67,262.16
  4. Step 4: Simplify right side
    104,759.76x = 10,540,494,354.90
  5. Step 5: Solve for x
    x = 10,540,494,354.90/104,759.76
  6. Step 6: Final answer
    x = 100,615.87

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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.