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Finding the Fourth Proportional to 68,390.46, 102,483.63 and 55,997.46

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Solution

The fourth proportional to 68,390.46, 102,483.63 and 55,997.46 is: 83,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.46 : 102,483.63 = 55,997.46 : x
  2. Step 2: Convert to fraction form
    68,390.46/102,483.63 = 55,997.46/x
  3. Step 3: Cross multiply
    68,390.46x = 102,483.63 × 55,997.46
  4. Step 4: Simplify right side
    68,390.46x = 5,738,822,971.58
  5. Step 5: Solve for x
    x = 5,738,822,971.58/68,390.46
  6. Step 6: Final answer
    x = 83,912.62

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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.