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Finding the Fourth Proportional to 103,636.52, 155,454.76 and 68,567.96

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Solution

The fourth proportional to 103,636.52, 155,454.76 and 68,567.96 is: 102,851.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.52 : 155,454.76 = 68,567.96 : x
  2. Step 2: Convert to fraction form
    103,636.52/155,454.76 = 68,567.96/x
  3. Step 3: Cross multiply
    103,636.52x = 155,454.76 × 68,567.96
  4. Step 4: Simplify right side
    103,636.52x = 10,659,215,765.49
  5. Step 5: Solve for x
    x = 10,659,215,765.49/103,636.52
  6. Step 6: Final answer
    x = 102,851.93

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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.