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Finding the Fourth Proportional to 104,401.15, 156,601.73 and 77,829.10

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Solution

The fourth proportional to 104,401.15, 156,601.73 and 77,829.10 is: 116,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,401.15 : 156,601.73 = 77,829.10 : x
  2. Step 2: Convert to fraction form
    104,401.15/156,601.73 = 77,829.10/x
  3. Step 3: Cross multiply
    104,401.15x = 156,601.73 × 77,829.10
  4. Step 4: Simplify right side
    104,401.15x = 12,188,171,315.20
  5. Step 5: Solve for x
    x = 12,188,171,315.20/104,401.15
  6. Step 6: Final answer
    x = 116,743.65

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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.