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Finding the Fourth Proportional to 166,490.50, 249,735.99 and 67,994.50

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Solution

The fourth proportional to 166,490.50, 249,735.99 and 67,994.50 is: 101,991.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,490.50 : 249,735.99 = 67,994.50 : x
  2. Step 2: Convert to fraction form
    166,490.50/249,735.99 = 67,994.50/x
  3. Step 3: Cross multiply
    166,490.50x = 249,735.99 × 67,994.50
  4. Step 4: Simplify right side
    166,490.50x = 16,980,673,772.06
  5. Step 5: Solve for x
    x = 16,980,673,772.06/166,490.50
  6. Step 6: Final answer
    x = 101,991.85

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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.