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Finding the Fourth Proportional to 71,219.80, 106,688.90 and 62,464.60

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Solution

The fourth proportional to 71,219.80, 106,688.90 and 62,464.60 is: 93,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,219.80 : 106,688.90 = 62,464.60 : x
  2. Step 2: Convert to fraction form
    71,219.80/106,688.90 = 62,464.60/x
  3. Step 3: Cross multiply
    71,219.80x = 106,688.90 × 62,464.60
  4. Step 4: Simplify right side
    71,219.80x = 6,664,279,462.94
  5. Step 5: Solve for x
    x = 6,664,279,462.94/71,219.80
  6. Step 6: Final answer
    x = 93,573.41

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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.